AUSTRALIAN SPACEGUARD SURVEY
NEO Alerts archive
- 1 Sep 11 SpaceDaily: Asteroid Impact on Earth: Experts Review Global Response and Mitigation Steps - promising...
- 19 Nov 2010 Scientific American: Brian Marsden, longtime director of the Minor Planet Center, dead at 73
- Brian was instrumental in setting up an orderly data system for
keeping track of NEOs. He has made the world a safer place for
everyone. MPC notice.
- 12 Oct 10 NASA: Small Asteroid to Pass Within Earth-Moon System Tuesday (10m diameter rock to "miss" us by just 45,000km - discovered 3 days ago)
- 28 Jul 10 UT: Researchers Say Asteroid Has 1 in 1,000 Chance of Hitting Earth in 2182.
- 17 Feb 10 UT: Asteroid Might be Visible to Naked Eye on Feb. 17 - 500km diameter Vesta is a Main Belt asteroid and is no threat to Earth. It will be unsually bright in mid-February.
- 30 Jan 10 TPS: From the Executive Director: Protecting our planet from dangerous NEOs - new TPS campaign. Watch for the Jan/Feb issue of The Planetary Report.
- 20 Aug 09 NAS: Near-Earth Object Surveys and Hazard Mitigation Strategies: Interim Report (free PDF, thanks Duncan Steel)
- 1 Aug 09 The Australian: Call to reinstate asteroid search - note that mention of the current search and follow-up program by Rob McNaught and colleagues got cut out by the editor! Copy of open letter to Prime Minister Rudd.
- 30 Jul 09 NASA: New website: Asteroid Watch.
- 28 Jul 09 TPS: Help Protect the Earth from Near-Earth Asteroids - donations sought
- 4 March 09 Arizona State University: Our Catstrophic Solar System: Impacts and the latest Revolution in Earth Science - Jay Melosh
- 2 Mar 09 ABC News: 30m asteroid to have close call with Earth
[tonight] - "the asteroid was discovered by fellow ANU astronomer Rob
McNaught on Friday. .. if it did hit, the rock is too small to cause
significant damage." (nonsense - a 30m object has much more energy than the Hiroshima atomic bomb and would cause an airblast as big as the Tunguska event) + Examiner: Tunguska-sized asteroid to skim Earth tomorrow closer than the moon, some satellites + NASA: Orbit Diagram + UT: Asteroid 2009 DD45 Just Buzzed by Earth.
- 6 Jan 09 NASA (via Space.com): Ideas
Sought to Protect Earth from Space Rocks - see also To
Nuke or To Nudge.
- 7 Oct 08 Space.com: Small
Asteroid to Streak into Earth's Atmosphere Tonight
- this is the first case of an object detected by the (northern
hemisphere) Spaceguard system that has been calculated
the Earth. It is only 2 metres in diameter and will explode in the
upper atmosphere. Spaceweather.com
update (diagram showing trajectory over Sudan).
- 26 Sep 08 Association
of Space Explorers (ASE): Asteroid
Threats: A Call for Global Response (PDF)
- 3 Sep 08 The Rosetta
Blog - online coverage of asteorid fly-by. UT: Countdown
to Asteroid Flyby.
- 26 Aug 08 TPS: Support The
Planetary Society Phobos LIFE Project - urgent request for
donations to send microbes on a round trip to the Martian moon to test
the transpermia hypothesis.
- 26 Jun 08 Nature: Tunguska
at 100 (by Duncan Steel) + The
burger bar that saved the world (interviews with key
Spaceguard people) - The
truly remarkable thing was that [the K/T impact was] such a small
impact — that has no effect on the Earth's rotation, its
its magnetic field, completely negligible physically — could
nevertheless wipe out most of the life on the Earth. Many
of the interviewed people signed the letter to the Australian Government in
2002. Note that computer
simulations show that most potentially fatal impact events
events DO NOT LEAVE IMPACT CRATERS
- they result from an ocean impact (with many of the fatalities due to
tsunami) or Tunguska-like fragmentation over land. The proportion of
fatal events that involve a land impact gradually increases from less
than 1% for events with around 100 fatalities to 16% for events with
around 1 million fatalities. Airburst impacts by small NEOs (under 100m
diameter) typically result in around 100,000 fatalities.
- 12 Jun 08 Space.com: Pluto
Now Called a Plutoid - see also Microplanet
- 19 Mar 08 ABC: Sci-fi
guru Arthur C Clarke dies - there are many references to
Sir Arthur on these pages.
- 25 Feb 08 GaiaShield: Call for signatures to
support the NEO Preparedness Act.
- 13 Jan 08 Space.com: Space
Rock [probably] Won't Wallop Mars, Scientists Say. Odds now 1
Dec 07 NASA: Astronomers have identified asteroid 2007 WD 5 in archival
imagery. With these new
observations, scientists at NASA's Near-Earth
Object Program Office at the Jet Propulsion Laboratory in Pasadena,
Calif have refined their trajectory estimates for the asteroid. Based
on this latest analysis, the odds for the asteroid impacting Mars on
Jan. 30 are now 1-in-25 -- or about 4 percent (David Morrison adds that
it is "normal" for the odds to increase with this type of close
approach - the main point is that extra observations have not
eliminated an impact at this stage)
- 27 Dec 07 Us Govt: Near-Earth
Objects (NEOs) – Status of the Survey Program and Review of
NASA’s Report to Congress (thanks Rusty Schweickart
- see also 13 Nov item)
- 22 Dec 07 LA times: Asteroid
on track for possible Mars hit - 1 in 75 chance of an impact
on 30 January 2008 (thanks David Morrison) +
may hit Mars in January + JPL podcast: Is
an Asteroid Heading Toward Mars?
- 13 Dec 07 SMH:
Sydney meteor shower alert - early hours of Saturday morning
- 25 Nov 07 The Age: Howard
concedes election ... [opinion] some 11 years after
he cancelled the Australian Spaceguard
100s of Near Earth Asteroids have passed through southern skies
unnoticed in that time. Some may pose a future threat to Earth and up
to 11 years will have been lost in mitigating that threat.
- 13 Nov 07 NASA
from Congressional hearing (thanks David Morrison):
- The ability to detect virtually every potentially
Near-Earth object and determine its orbit with precision transforms
that statistical threat into a deterministic prediction. We face many
threats, and virtually all of them are either so complex or
unpredictable that they are treated probabilistically even though the
social and financial consequences are legion. With a comparatively
small investment the NEO risk can be transformed from a probabilistic
one to a deterministic one, enabling mitigation - J. Anthony Tyson
- While suitable deflection technologies exist, none of
can be effective if we are taken by surprise. It is the aggressive
survey efforts and robust planetary radars that must ensure that the
vast majority of potentially hazardous objects are discovered and
tracked well in advance of any Earth threatening encounters. The first
three steps in any asteroid mitigation process are: Find them
early, find them early, and find them early! - Don Yeomans
- Unlike other natural hazards, however, NEO impacts
predicted well ahead of time and actually prevented from occurring. If
we live up to our responsibility, if we wisely use our amazing
technology, and if we are mature enough, as a nation and as a community
of nations, there may never again be a substantially damaging asteroid
impact on the Earth. We have the ability to make ourselves
safe from cosmic extinction. If
we cannot manage to meet this challenge, we will, in my opinion, have
failed to meet our evolutionary responsibility. - Rusty Schweickart
- 12 Nov 07 Armagh Observatory: The Leonid
Meteors 2007 - see also Leonids
- 12 Nov 07 NewSci: NASA
blasted for ignoring smaller asteroids + NASA: Congressional
Hearings on NEO Survey Programs (testimonies)
- 6 Jun 07 NASA: 2006
Near-Earth Object Survey and Deflection Study: Final Report +
Clark Chapman: Critique
of "2006 Near-Earth Object Survey and Deflection Study: Final Report"
Published 28 Dec. 2006 by NASA Hq. Program Analysis &
Evaluation Office (Word doc) + Summary and Recommendations from AIAA
Planetary Defense Conference (thanks David
- 8 Mar 07 Space.com: NASA
Can't Afford Hunt for Killer Asteroids
- 19 Feb 07 New Scientist: Asteroid
threat demands response, experts warn.
- 5 Feb 07 Spaceweather: ASTEROID FLYBY:
Mark your calendar. On March 31st, a 2-km wide asteroid named 2006 VV2
will glide past Earth. There's no danger of a collision: the space rock
will be 8.8 times farther away than the Moon.The flyby is interesting
because it is so bright, between 9th and 10th magnitude...
- 20 Jan 07 - Comet,
crescent Moon and Venus in one shot - image by Michael Paine.
images by Rob McNaught.
- 19 Jan 07 Comet McNaught C/2006 P1 from Sydney - image
by Michael Paine
- 17 Jan 07 Quasar Publishing: Astronomy
2007: The Book - has a superb article on the status of
Spaceguard by Duncan Steel. Only available in the book.
- 16 Jan 07 Space.com: The
Great Comet of 2007: Watch it on the Web - spotted from
Sydney on the evening of 15 Jan very close to the horizon just to the
left of where the Sun set.
- 11 Jan 07 Space.com: New
Comet is Brightest in 30 Years - currently visible
around sunset in the Northern Hemisphere. Stand-by for a great show in
coming weeks Rob
- 30 Dec 06 NASA NEO News: Arecibo
Radar Threatened...+ CNN: Finances
cloud future of 'Contact' telescope
- "a looming cut in U.S. government financing"..."By bouncing radio
waves off asteroids, it also charts their location, speed, course and
some other characteristics...". See also SpaceDaily: Radar
Love: Asteroid Detection And Science
- "microwaves from the Arecibo Observatory in Puerto Rico reached out
and touched asteroid Apophis on Jan. 27, 29, and 30, 2005. The Arecibo
data significantly improved the asteroid's orbital estimate, ruling out
a potential Earth collision in 2029. The 1,000-foot diameter Arecibo
telescope is one of only two places in the world where radar astronomy
is effectively performed. The other is at the 70-meter Goldstone
antenna in California's Mojave Desert. The two instruments are
complementary. The Arecibo radar is not fully steerable (while
Goldstone is), but it is 30 times more sensitive. Together they make a
formidable asteroid reconnaissance team...". Comment: The ill-advised
budget cuts at Arecibo radio telescope are
similar the Australian government's cancellation the
component of Spaceguard in 1996.
- 28 Dec 06 UT: Close
Call with Asteroid 2006 XG1 in 2041 - 670m diameter space
rock with a 1 in 77,000 chance of hitting the Earth on 31 Oct 2041 (NASA calcs).
Further observations will likely eliminate any risk of collision. BUT
mankind might not have the accurate instrument to do the job - see item
above about Arecibo radio telescope.
- 12 Dec 06 Space Review: Can we
detect asteroid impacts with rocky extrasolar planets? by
- 18 Nov 06 Space.com: Viewer's
Guide: The 2006 Leonid Meteor Shower - [the peak]
encounter is predicted for Nov. 19 at 4:45 GMT (see Leonids news & links) -
unfortunately it will be about 4pm on Sun 19 Nov in Sydney and the sky
won't be dark for another 4 hours. But try early Sunday morning
[update: no show in Sydney!]
- 19 Oct 06 Space.com: Strong
Leonid Meteor Shower Expected Nov 18 (see Leonids news & links)
- 10 Oct 06 BBC: UK
to join 'killer' asteroid hunt.
- 4 Sep 06 Planetary Society: Apophis
Mission Design Competition - Will Apophis (see 2 June
pass through the "keyhole,"
the small area on its 2029 path that would cause it to hit Earth on its
next orbit in 2036? We have to find out, because if an impact is likely
to occur, we're going to need all the time possible to plan and
implement space missions to deflect it away from Earth.
No government currently has plans to accurately track this potential
Earth-impactor - the Planetary Scoiety needs funds to take up this
- 3 Jul 06 Space.com: Asteroid
to Glimpse Close Flyby. It will be early Monday afternoon
(daylight!) in Australia. Spaceweather.com
XP14 Planning for radar observations by NASA. JPL
- 17 May 06 Space.com: NASA
to Look into NEO Threat Response Proposals - "The
U.S. Congress has declared that the general welfare and security of the
United States require that the unique competence of NASA be directed to
detecting, tracking, cataloguing, and characterizing near-Earth
asteroids and comets in order to provide warning and mitigation of the
potential hazard of such near-Earth objects to the Earth..." (see
- 12 May 06 Comet
is poorly positioned for viewing from Australia this weekend. Just
before dawn it is very low in the northern sky (RA 20h 31m, Dec 27.52
degrees). Northern hemisphere observers will have a much better
- 23 Apr 06 SpaceDaily: Cometary
String Of Pearls To Swing Past Earth In May.
- 26 Jan 06 (Happy Australia Day!) TPS: [Deep Impact] Comet Crater Contest Inconclusive
- 23 Jan 06 TPS: Donations
2006 Shoemaker NEO Grants. TPS members have been sent a
suport from Rusty
- 3 Nov 05 - speculation about spotting
- 5 Jul 05
TPS report on Deep Impact mission.
- 4 Jul 05 4pm Sydney time - We have impact (at right - a
screen snapshot of the image that
JPL people cheered)!
- 2 Jun 05: A
Call for (Considered) Action, Russell L.
(Word 2000, 21K) Full
paper, (.pdf, 883K) B612
Foundation. The 2029/2036 "keyhole"
for 2004 MN4 is only 600 metres
across - a very small "nudge" would prevent an
impact in 2036 (if
would otherwise pass through that keyhole)
- 21 Mar 05 Royal Astronomical Society of Canada Dec98: Impact
through geologic time (updated URL) by Gene Shoemaker (3Mb
PDF) - a
paper. Covers the various ways of estimating
the possibility that we are in a peak
comet impacts due to the oscillation of the Sun through the
galactic plane and the Australasian
Tektite event as an example of the current peak.
- 5 Feb 05 S&T: ASTEROID
2004 MN4: A REALLY NEAR MISS - a 320m diameter rock will pass
30,000km of the Earth on Friday 13 April 2029. Since the Earth travels
at about 1800km/minute around the Sun a "miss" of 30,000km represents
15 minutes in the least
configuration (Earth moves one
radius in 3.33 minutes). A 320m asteroid is not particularly "huge" but
if it hit
create a 6km wide crater and flatten
buildings out to about 100km.
On 18 December, the object was rediscovered by Gordon Garradd at Siding
Spring in New South Wales., Australia. This raised an alert among
fortunately, now know that it will miss the Earth in 2029. But it will
come back to haunt us in subsequent centuries.
Gordon was a member of Spaceguard Australia, which was disbanded in
1996 when Australian government funding was stopped. In frustration
NASA has partly funded his important work.
- 29 Dec 04 NASA: Possibility
Earth Impact in 2029 Ruled Out for Asteroid 2004 MN4
"once again old
observations provided the
data necessary to rule out an impact" (Benny Peiser)) - up
observations were suggesting an increased risk of an impact - stay
tuned as this story unfolds! Updated
- 24 Dec 04 UT: Asteroid
2004 MN4 Gets the Highest Score on the Torino Scale (400m in
diameter, 1 in 300 chance of impact in 2029 - further
observations will likely eliminate the risk). NASA news
2004 MN4 was discovered on 19 June 2004 by Roy Tucker, David Tholen and
Fabrizio Bernardi of the NASA-funded University of Hawaii Asteroid
Survey (UHAS), from Kitt Peak, Arizona, and observed over two nights.
On 18 December, the object was rediscovered
from Australia by Gordon Garradd of the Siding Spring
another NASA-funded NEA survey.
- 25 Nov 04 Icarus (abstract): Bias-corrected
population, size distribution, and impact hazard for the near-Earth
objects - this study suggests that the impact rate is several
lower than earlier estimates.
- 9 Nov 04 Xinhuanet : CHINA JOINS SPACEGUARD EFFORTS - Largest
near-earth objects telescope [in China] installed - still
search in the Southern Hemisphere.
- 4 Nov 04: PROTECTING
FROM ASTEROIDS AND COMETS
- (PDF) An AIAA Position Paper (2004)... world governments must take the
NEO impacts seriously and must support actions that lead to the
development of credible defensive capabilities.
- 8-9 Nov 04: Australian Risk Engineering Conference - RISK 2004.Keynote Speaker - Duncan
- 7 Oct 04 Abstracts
for the proceedings of Bioastronomy 2002: Life Among the Stars
available - several papers concerning microplanets.
- 12 Aug 04 Comment: Despite good progress
towards the US
Spaceguard Goal (90% of 1km+ Near Earth Asteroids detected by
2008) there are still plenty of gaps in our defences and no sign of
serious support from governments outside the USA and Japan. With
sufficient resources there is the potential, within a decade or so, to
eliminate the threat of global catastrophe from short period comets
to our region of the solar system every few years).
of local catastrophe from a Tunguska-like airburst will take
much longer to deal with, as will the global threat from long period
comets and asteroids. Results
simulation that derives fatality rates for each type of
(the overall risk has reduced since the simualtion was undertaken but
the relative contribution is unchanged).
- 5 Jul 04 :"I ask you to declare your support for these
dedicated watchers of the sky by making a donation to The
Society's Gene Shoemaker NEO Grant Fund. Your
make a profound difference - for science and for the safety of
humankind." Sincerely, Louis D. Friedman
Executive Director -The Planetary Society
- Aug 03 NASA: Near Earth Object Science Definition
determine the feasibility of extending the search for Near Earth Object
to smaller limitg diameters". (1.2Mb PDF)
- 26 May 04 EPSL paper: The
hazard of near-Earth asteroid impacts on earth by Clark
- 20 Apr 04: PLANETARY
DEFENCE AT LEARMONTH SOLAR OBSERVATORY - Western Australia
Jay Tate and CCNet)
- 9 Apr 04 Uni Arizona: ASTRONOMERS
TAKE SEARCH FOR EARTH-THREATENING SPACE ROCKS TO SOUTHERN SKIES -
Rob McNaught's project comes online. (CC)
- 26 Feb 04 Space.com: Earth
At Risk: New Calls For Planetary Defense. - Developing
a viable mitigation campaign, Yeomans explained, demands three
prerequisites: "You need
to find them
early. You need to find them
early. And we need to find them early."
- 20 Feb 04 IAU: Working Group on Near-Earth Objects -
Information on Near-Earth Object AL00667
STATEMENT ON DEALING WITH SHORT-TERM IMPACT PREDICTIONS
Issued by the IAU
Working Group on NEOs (WGNEO).
Issue date: 2004 February 19
On the night of
13/14, 2004, the international asteroid science community faced an
unprecedented situation, with an initial
prediction of an
impact of a small
[30m - if it had been as close as first thought]
asteroid on the Earth within a few days. [It missed us by
millions of km]. Postscript: As an indication of the poor quality of
journalism sometimes covering these events, in several US newspapers
"30m" was interpreted as 30 miles - now THAT would have caused some
- 24 Jan 04 Spacewatch: Online
Spacewatch Volunteer Discovers Close-Approaching Asteroid
Human observers are still much better than computers at finding FMOs in
Spacewatch images. But the work is too time intensive for on-duty
Spacewatch observers. So the astronomers have turned to 30 volunteers
for help. FMO project volunteers are based in the United States,
Germany, and Finland.
more. The only requirements are interest, sharp eyes, and
computer when astronomers are operating Spacewatch telescopes on Kitt
Peak. More details on how to volunteer for the FMO Project are on the
Web at FMO
- 17 May 05: PDF of talk given at Australian Centre for
Astrobiology in 2003: Asteroids
- now for the good news in conjunction with a talk by Mark
Sonter on asteroid mining.
- 23 Jul 02 Bioastronomy 2002
paper by Paine and Peiser: The
Consequences of Cosmic
Impacts Since the Demise of the Dinosaurs (280K PDF). A shortened,
refereed version is now published in the Proceedings
of Bioastronomy 2002: Life Among the Stars. See also CLIMATE,
COMETS AND HUMAN HISTORY by Dr Vic Gostin
NEO News Archive
Some older links may have expired.
- 23 Dec 10 Space.com: Solar Sail Flotilla Could Divert Possibly Dangerous Asteroid [by shading it] (see also Rocks from Space)
- 23 Dec 10 EPSL($): Mechanisms and models of iridium anomaly shape across the Cretaceous–Paleogene boundary.
- 13 Dec 10 UT: Asteroid Scheila Sprouts a Tail and Coma.
- 10 Dec 10 NewSci: Lucky [asteroid] strike gave Earth its gold - see also Riches in the rubble of the Solar System.
- 4 Dec 10 Space.com: A Week's Warning of Asteroid Strike Would Be Simple, Scientist Says.
- 17 Nov 10 Space.com: Small Asteroid to Give Earth a Close Shave (passing by as I write this!) - probably a few metres across and passing within 40,000km
- 17 Nov 10 Space.com: U.S. and Australia Join Forces to Track Space Junk (but not NEOs?) + World Action Plan Emerging to Combat Asteroid Threat.
- 16 Nov 10 BBC: Japan probe collected particles from Itokawa asteroid - congratulations to JAXA for the first time samples from an asteroid have been returned to Earth
- 4 Nov 10 SpaceDaily: Purdue [Uni] Unveils [updated] Asteroid Impact Effects Calculator - Calculator is here. See also Environmental effects
- 25 Oct 10 The Australian: Outback asteroid strike caused huge explosion and left 80km shock zone, studies reveal.
- 20 Oct 10 Space.com: Planetary Defense Coordination Office Proposed to Fight Asteroids.
- 15 Oct 10 UT: Is the World Ready for An Asteroid Threat? Apollo’s Schweickart Pushes for Action.
- 13 Oct 10 NewSci: Ocean asteroid hits will create huge ozone holes - see also The Frequency and Consequences of Cosmic Impacts Since the Demise of the Dinosaurs (280K PDF)
- 12 Oct 10 NASA: Small Asteroid to Pass Within Earth-Moon System Tuesday (10m diameter rock to "miss" us by just 45,000km - discovered 3 days ago)
- 21 Sep 10 BBC: Massive blast 'created Mars moon' (see also the last item below)
- 21 Sep 10 EPSC 2010 conference:
- 14 Sep 10 Space.com:14 Big Space Rocks Discovered Beyond Neptune.
- 10 Sep 10 UK Telegraph: Two large [?] asteroids narrowly miss earth, Nasa said
- 10 Sep 10 NASA: Caught in the Act: Fireballs Light up Jupiter
- 8 Sep 10 Nature: NASA panel weighs asteroid danger.
- 8 Sep 10 NASA: Two Asteroids to Pass by Earth Wednesday.
- 8 Sep 10 BBC: Double space strike 'caused dinosaur extinction' (but one was enough!)
- 16 Aug 10 ABC Science: Scientist googles crater find (thanks Paul Curnow)
- 31 Jul 10 NewSci: Cosmic Trojans may sneak comets towards Earth.
- 30 Jul 10 Physorg.com: Untouched meteorite impact crater found via Google Earth (thanks Duncan Steel)
- 29 Jul 10 AMEC2010: Potential for microbe colonisation of Mars by rocks launched into space by the Chicxulub impact - paper by Michael Paine
- 28 Jul 10 Nature: A closer look at cosmic impacts - Moon-crater survey could improve Solar System surface-dating methods.
- 28 Jul 10 Space.com: Debate Heats Up Over Meteor's Role in Ice Age.
- 28 Jul 10 UT: Researchers Say Asteroid Has 1 in 1,000 Chance of Hitting Earth in 2182 + Space.com: Asteroid Could Threaten the Earth in 2182 + NASA risk page.
- 24 Jul 10 Space.com: Comet Smacked Neptune 200 Years Ago, Data Suggests.
- 12 Jul 10 SpaceDaily: European probe Rosetta successfully flies by asteroid.
- 1 Jul 10 Space.com: NASA Tackles Problem with [Dawn] Asteroid Probe.
- 23 Jun 10 SciAm: Space Rock Watch: Next Generation of Near-Earth Asteroid Lookout Comes Online.
- 18 Jun 10 BBC: Pann-Starrs telescope begins operations to hunt asteroids (see also Search for Large Asteroids Nears Completion, Experts Ponder Gaps in Program)
- 5 Jun 10 Space.com: Rogue Asteroid, Not Comet, Smacked Into Jupiter + UT: New Impact on Jupiter.
- 2 Jun 10 NewSci: Asteroid strike may have frozen Antarctica
- A massive asteroid hit the Timor Sea around 35 million years ago -
and the impact apparently contributed to the formation of the Antarctic
- 27 May 10 SciAm: Back off, asteroids--We've got nukes (but see Nudging not nuking)
- 22 May 10 ANU: Asteroid crater found under the Timor Sea (thanks Paul Curnow)
- 22 May 10 SciAm: 12 Events That Will Change Everything, Made Interactive (see the NEO item - but note that NEOs need to be larger than 1km to create ocean-wide tsunami)
- 13 May 10 Astrobiology Science Conference 2010:
- 11 May 10 Report: Defending Planet Earth: Near-Earth Object Surveys and Hazard Mitigation Strategies: Final Report -
Committee to Review Near-Earth Object Surveys and Hazard Mitigation Strategies (tahnks David Morrison)
- 11 May 10 NewSci: Is Halley's comet an alien interloper?
- 8 May 10 Icarus: Dynamical erosion of the asteroid belt and implications for large impacts in the inner Solar System
- Our model suggests that the rate of impacts from large
asteroids has declined by a factor of 3 over the last 3 Gyr, and that
the present-day impact flux of D>10km [very large] source
objects on the terrestrial planets is roughly an order of magnitude
less [one tenth] than estimates currently in use in crater chronologies
and impact hazard risk assessments.
- 8 May 2010 ANU: Cosmic time machine.
- 30 Apr 10 Space.com: Potentially Dangerous Asteroid Spotted Passing Earth.
- 29 Apr 10 UT: Possible Destination? Researchers Find Water Ice and Organics on Asteroid (see also Riches in the Rubble)
- 16 Apr 10 UT: Huge Fireball Seen Over 7 Midwest US States.
- 4 Apr 10 Icarus: Archaean asteroid impacts, banded iron formations and MIF-S anomalies: A discussion.
- 3 Apr 10 NewSci: Did a comet swarm strike America 13,000 years ago?
- 3 Apr 10 Spaceflight Now: Hayabusa sets sights on planet Earth for June return (thanks Jon Clarke) - might have a piece of asteroid aboard. Targetted to land in central Australia in June.
- 26 Mar 10 BBC: Cuts cast doubt on asteroid plan
- funding cuts to Arecibo. "... the best method for deflecting a small
asteroid would be to fly a relatively heavy spacecraft into it. .."
- 24 Mar 10 SciAm: Volcanoes killed with global warming, 200 million years ago. More on extinctions.
- 18 Mar 10 SciAm: Hominins lived on Flores for nearly one million years before hobbit - "...climate change, volcanoes or other force might have killed off these animals [800,000 years ago]" - here is a candidate event.
- 18 Mar 10 EPSL: Tungsten isotopic evolution during late-stage accretion: Constraints on Earth–Moon equilibration
- 17 Mar 10 ABC: Rogue star to hit [might pass close to] the solar system
- "There is a high probability our solar system will feel the effect of
a close encounter from a nearby star, according to a new study...The
star, known as Gliese 710, could disrupt planetary orbits and send a
shower of comets and asteroids towards the inner planets when it passes
in 1.5 million years time." - but wait for peer-review of this
prediction. See also the notes to Estimated flux of rocks bearing viable lifeforms exchanged between Earth and Mars
- "It has been estimated that every 100 million years or so another
star system passes within 3000 AU of the Sun - well within the Oort
Cloud (Hills 1981)."
- 17 Mar 10 SpaceDaily: Interrogating The Asteroid.
- 15 Mar 10 NewSci: Accidental origins: Where species come from - "It isn't the accumulation of events that causes a speciation, it's single, rare events falling out of the sky, so to speak. Speciation becomes an arbitrary, happy accident when one of these events happens to you."
- 14 Mar 10 Times Online: Comet's dramatic death dive into the sun
- 12 Mar 10 NewSci: 'Terminator' asteroids could re-form after nuke.
- 12 Mar 10 BBC: Congo ring may be giant 'impact crater' [much work to be done]
- 5 Mar 10 NewSci: Dark, dangerous asteroids found lurking near Earth - early results from WISE
- 5 Mar 10 Space.com: Rock Solid Link: Asteroid Doomed the Dinosaurs
- "Combining all available data from different science disciplines led
us to conclude that a large asteroid impact 65 million years ago in
modern day Mexico was the major cause of the mass extinctions." +
Science ($): The Chicxulub Asteroid Impact and Mass Extinction at the Cretaceous-Paleogene Boundary + Of Two Minds About Toba's Impact [volcanic explosion].
- 4 Mar 10 BBC: Clues to Antarctica space blast.
- 3 Mar 10 NASA: Natural Impact Hazard (Asteroid Strike) Interagency Deliberate Planning Exercise After Action Report December 2008.
- 1 Mar 10 Nature: Ancient impact hammered Northern Hemisphere [Chicxulub]
- 17 Feb 10 ABC TV Hungry Beast: Asteroids!
- 16 Feb 10 BBC:
Space rock contains organic molecular feast + SciAm: Meteorite That Fell in 1969 Still Revealing Secrets of the Early Solar System (but see also Fossilized Bacteria Found in Ancient Meteorite
- "Murchison meteorites are even more likely than most to have
experienced contamination since they fell in a farmyard and, reputedly,
at least some of the stones had to be recovered from a ditch filled
- 11 Feb 10 Daily Mail (UK): Did an asteroid strike in [near] Australia plunge Anglo-Saxon England into a mini ice-age?
- 11 Feb 10 Superbowl ad - spoof on Spaceguard (thanks... Duncan Steel)
- 4 Feb 10 Space.com: Slam! Two Asteroids Suspected in Space Collision.
- 30 Jan 10 TPS: From the Executive Director: Protecting our planet from dangerous NEOs - new TPS campaign. Watch for the Jan/Feb issue of The Planetary Report + A New Way to Deflect a Dangerous Asteroid: Mirror Bees.
- 30 Jan 10 Space.com: Global Asteroid Warning System Needed to Protect Earth - meeting in Mexico.
- 26 Jan 10 Space Review: Death from the skies? Ho-hum
- 26 Jan 10 NASA: NASA's WISE Eye Spies Near-Earth Asteroid.
- 24 Jan 10 NewSci: Hidden asteroids are stalking the Earth + Approaching Earth makes asteroids go pale.
- 24 Jan 10 UT: Asteroid Detection, Deflection Needs More Money, Report Says.
- 13 Jan 10 UT: Asteroid or Space Junk? Object Makes Close Pass by Earth Wednesday [it is an asteroid].
- 12 Jan 10 TPS: Results from the Rosetta Encounter with Asteroid 2867 Steins.
- 3 Jan 10 EPSL: Two extraterrestrial dust horizons found in the Dome Fuji ice core, East Antarctica + Shock and post-shock temperatures in an ice–quartz mixture: implications for melting during planetary impact events.
- 31 Dec 04 SciAm: How much did hurricanes and other natural disasters cost
the insurance industry in the first 10 months of 2004?
- 31 Dec 04 Public Statement by the IAU and its Working Group
on Near-Earth Objects on NEO 2004MN4
- 31 Dec 04 S&T: Earth Safe
from Asteroid 2004 MN4.
- 29 Dec 04 Copy of "The
Earthquake and Tsunami of 26 December 2004 in Southeast Asia"
by Dr. George Pararas-Carayannis temporarily added due to his website
being overloaded. More on this disaster.
- 29 Dec 04 NASA: Possibility of an
Earth Impact in 2029 Ruled Out for Asteroid 2004 MN4 (CC - "once again old observations provided the
data necessary to rule out an impact")
- 29 Dec 04 Space.com: Whew!
Asteroid Won't Hit Earth in 2029, Scientists Now Say + Worrisome
Asteroid Underscores Planetary Defense Mission + Asteroid
With Chance of Hitting Earth in 2029 Now Being Watched 'Very Carefully'
- 24 Dec 04 UT: Asteroid
2004 MN4 Gets the Highest Score on the Torino Scale (400m in
diameter, 1 in 300 chance of impact in 2029 - further
observations will likely eliminate the risk) + Jovian
Moon Was Probably Captured
- 24 Dec 04 S&T: COMET
- 23 Dec 04 Space.com: Small
Asteroid Passes Between Satellites and Earth .
- 23 Dec 04 Nature: Meteoric
smoke fallout over the Holocene epoch revealed by iridium and platinum
in Greenland ice + The impact of humidity above stratiform clouds
on indirect aerosol climate
forcing (ocean impacts?)
- 22 Dec 04 ABC Radio Science Show: Deep
Impact - interview with Duncan Steel (no "e"!)
- 22 Dec 04 SciAm: How
do volcanoes affect world climate?
- 16 Dec 04 China Daily: Mass
UFO spotted in Gansu Province (Meteorite fall) (CC)
- 16 Dec 04 Acta Astronautica: Charting
response options for threatening near-Earth objects (CC)
- 16 Dec 04 ABC Science: The
Search for Planets - southernmost professional observatory (apart
from South Pole?)
- 16 Dec 04 Stanford Uni: Geophysicists debate the cause of hotspots (CC)
- 15 Dec 04 Comptes Rendus Geosciences: Discovery
of the largest impact crater field on Earth in the Gilf Kebir region,
- 15 Dec 04 SFC: Scientists
clash over origin of 'the Great Dying' - Volcanic, celestial theories
on extinction 250 million years ago take stage in S.F. (CC)
- 15 Dec 04 Acta Astronautica: Planetary
Defense From Space: Part 1-Keplerian Theory (CC)
- 15 Dec 04 SMH: Comet
mission fires up for deep impact
- 13 Dec 04 SMH: Cosmic fireworks show - If the weather behaves,
Sydney may be treated to a meteor shower tonight and early tomorrow.
- 9 Dec 04 Nature: Crystalline
water ice on the Kuiper belt object (50000) Quaoar + Chilly
Quaoar had a warmer past
- 9 Dec 04 Kansas City Star: Debate
still rages on demise of dinosaurs (CC)
- 8 Dec 04 Space.com: New
Comet Now Visible to Naked Eye
- 8 Dec 04 UT: Geminids
Peak on December 13th - NASA
- 4 Dec 04 Starlore: CLIMATE,
COMETS AND HUMAN HISTORY - Dr Vic Gostin.
- 4 Dec 04 GCA: The
carbon isotopic distribution of Murchison amino acids.
- 3 Dec 04 Science: Did
Jupiter and Saturn Team Up to Pummel the Inner Solar System?
- 3 Dec 04 Geology (abstracts):
Geochemistry of the end-Permian extinction event in Austria and Italy:
No evidence for an extraterrestrial component + Iridium
anomalies and shocked quartz in a Late Archean spherule layer from the
Pilbara craton: New evidence for a major asteroid impact at 2.63 Ga.
- 3 Dec 04 ABC: ANCIENT
METEORITE LEAVES TELLTALE TRACES - The first convincing evidence of
a massive meteorite impact that occurred 2.63 billion years ago has
been found in northwestern Australia's Pilbara region.
- 3 Dec 04 NewSci: Major
satellite in mystery shutdown [maybe space debris or meteoroids].
- 2 Dec 04 Nature (abstract): Stellar
encounters as the origin of distant Solar System objects in highly
eccentric orbits - see also Transpermia
- 1 Dec 04 SpaceDaily: New Evidence
Supports Terrestrial Cause Of End-Permian Mass Extinction - "Our
geochemical analyses of these two famous end-Permian sections in
Austria and Italy reveal no tangible evidence of extraterrestrial
impact," said Koeberl.
- 30 Nov 04 The Daily Inter Lake: Researchers
propose extraterrestrial [KT] connection for Montana coal fields
- 30 Nov 04 Space.com: How
Collisions Shaped an Asteroid.
- 26 Nov 04 Science (abstracts): Impact-Induced
Seismic Activity on Asteroid 433 Eros: A Surface Modification Process
Simple About Asteroids.
- 25 Nov 04 Icarus (abstract): Bias-corrected
population, size distribution, and impact hazard for the near-Earth
objects - Globally destructive
collisions (~1021 J) of asteroids 1 km or larger strike the Earth once
every 0.60±0.1 Myr on average. Regionally destructive collisions
with impact energy greater than 4×1018 J (~200 m diameter) strike
the Earth every 56,000±6000 yr. Collisions in the range of the
Tunguska event (4-8×1016 J) occur every 2000-3000 yr. (CC)
- 23 Nov 04 BBC: Bees
survived dino extinction - GSA release.
- 23 Nov 04 GSA: Did
Dinosaurs Die at Hands of Meteorite Fall or Volcanic Eruption? (a
- 20 Nov 04 ABC: The
asteroid was innocent, says dino study - many researchers are
skeptical about Dr Keller's latest claims. See Impacts
- 19 Nov 04 Science: How
Neptune Pushed the Boundaries of Our Solar System.
- 19 Nov 04 Space.com: The
Terminator Tether Aims to Clean Up Low Earth Orbit.
- 15 Nov 04 Space.com: The
Leonid Meteor Shower 2004: Modest Peak Expected Nov. 16-19. Leonids links page. NASA predictions for 2004.
- 13 Nov 04 UT: Hubble's
Accidental [main belt] Asteroid Discovery
- 12 Nov 04 SpaceDaily: Deep Impact
Undergoing Final Preparations For Dec 30 Launch
- 11 Nov 04 UT: Icy
Objects Could Be Smaller Than Previously Thought -
KBO's are probably brighter than previously thought and therefore much
smaller than estimated.
- 10 Nov 04 NAI:
as Lifeboat? (NEO deflection by B612 Foundation)
- 10 Nov 04 Space Review: SAGAN'S RATIONALE
FOR HUMAN SPACEFLIGHT (CC)
- 9 Nov 04 Xinhuanet : CHINA JOINS SPACEGUARD EFFORTS - Largest
near-earth objects telescope [in China] installed
- 5 Nov 04 2nd International Workshop on WATER DYNAMICS: Program
- J. L Kirschvink "BORON, RIBOSE, AND A MARTIAN ORIGIN FOR
- M. T. Rosing "THE EARLIST TRACES OF LIFE ON EARTH FROM
ISUA, WEST GREENLAND - MORE THAN 3700 MILLION YEARS OF INTERACTION
BETWEEN EARTH AND ITS LIFE"
- M. R. Rampino "MAJOR PERTURBATION OF OCEAN CHEMISTRY
THE END-PERMIAN MASS EXTINCTION"
- L. Becker "GLOBAL EVIDENCE FOR A PERMIAN-TRIASSIC IMPACT
- E. Pierazzo "OCEANIC IMPACTS AND THE ENVIRONMENTAL
OF ATMOSPHEREIC WATER INJECTION"
- 5 Nov 04 NewSci: Largest
ever field of impact craters uncovered - other researchers are
skeptical about the claims.
- 4 Nov 04 NASA NEO News: PROTECTING EARTH
FROM ASTEROIDS AND COMETS
- (PDF) An AIAA Position Paper (2004). Recommendations:
- Create an organization within the U.S. government
responsible for planetary defense.
- Extend the Spaceguard Survey, currently focused on
finding and cataloging 1-km-class objects and larger, to include
finding and cataloging 100-m-class NEOs and larger.
- Develop and fund ground-based techniques as well as
missions to several asteroids to gather information that contributes to
designing deflection missions.
- Conduct mission design studies to characterize requirements
for short-, medium-, and long-term missions.
- Conduct flight tests to demonstrate our ability to change a
- Sponsor research to assess the political, social, legal,
and disaster relief
consequences of a serious NEO threat, mitigation effort, or possible
governments must take the threat of NEO impacts seriously and
must support actions that lead to the development of credible defensive
- 4 Nov 04 Nature: Supernova
debris found on Earth - Ancient explosion may have affected climate
and, possibly, human evolution.
- 3 Nov 04 NAI: Shiva:
Another K-T impact?
- 3 Nov 04 AGU Annual Meeting sessions: Evaluating
the Role of Impact in the End Permian and End Traissic Mass
Extinctions: How Do These Compare With Other Impact or Extinction
Events? I + II
Hotspots and Bipolar Catastrophes: Were Oceanic Large-Body Impacts to
Blame? + Ices,
Icy Satellites, Comets, and Other Small Bodies + Correlations
Between Magnetic Anomalies and Surface Geology Antipodal to Lunar
Impact Basins + Characterizing
Starting Conditions for Hydrothermal Systems Underneath Martian Craters
in the Seabed of the Gulf of California Caused by Volcanic Explosion?
Volcanic Subsidence? Meteoroid Impact? Hydrocarbon Venting? or
Dissolution? + Radiating
fissure swarms in Beta Regio, Venus: Evidence of formation from impact
- 2 Nov 04 SpaceDaily: Cambridge Astronomers Take Hubble-Quality Images
from the Ground (not for Spaceguard - but the technology looks
- 2 Nov 04 ABC: Oz desert best to
photograph fireballs (Thanks Spaceguard UK)
- 2 Nov 04 NASA: Hyperbole in Reports on NEOs and Impacts
- 2 Nov 04 PSRD: New Lunar
Meteorite Provides its Lunar Address and Some Clues about Early
Bombardment of the Moon.
- 30 Oct 04 GSA Annual meeting: Discussion
Impacts & Evolution +
- 30 Oct 04 BBC: Tidal
wave threat 'over-hyped'
- 28 Oct 04 Nature: New species of man discovered - Dwarf hominid lived in Indonesia just 18,000
- 25 Oct 04 NAI: Countdown
to Deep Impact
- 25 Oct 04 ACC: Tiny
(8 metre) Earth-Moon system intruder 2004 UH1 -
MPEC 2004-U29 today announces the discovery of
tiny 2004 UH1, which is flying through the Earth-Moon
system and, according to JPL,
will come to 0.7 to 0.8 lunar distances from Earth around 1740 UT
(1:40pm EDT) tomorrow (24Oct). From its brightness, its diameter is
at 8 meters...
- 22 Oct 04 Science (subs): Comment
on "Bedout: A Possible End-Permian Impact Crater Offshore of
Andrew Glikson + Response
to Comment on "Bedout: A Possible End-Permian Impact Crater Offshore of
L. Becker, R. J. Poreda, A. R. Basu, K. O. Pope, T.
M. Harrison, C. Nicholson, and R. Iasky
- 22 Oct 04 Space.com: Experts
Calculate Risk of Uncontrolled Hubble Re-entry - NASA: ORSAT
software & Safety
- 21 Oct 04 PSS: Catastrophic
Disruption of Small Solar System Bodies (contents of Journal)
- 21 Oct 04 UT: Orionid
Meteor Shower, October 21
- 21 Oct 04 NAI: Multiple Impacts?
- More KT speculation. Note that a 'meteorite' is a small lump of rock
that reaches earth from space. The Chicxulub crater was formed by an
asteroid or comet at least 10km in diameter (I prefer the term microplanet
to describe these objects). While there may have been speculative
near-simultaneous impacts and other factors that led to the demise of
the dinosaurs the environmental effects of
Chicxulub were easily sufficient to account for the observed extinctions.
- 19 Oct 04 American Scientist:
It Came from Outer Space? A recently discovered impact crater in
Italy could be just an old watering hole
- 19 Oct 04 SciAm: What
is the chance of an asteroid hitting Earth and how do astronomers
calculate it? (CC) (see also Risk and
- 19 Oct 04 MNRAS: Extreme albedo comets
and the impact hazard (very dark comets might be buzzing us
undetected - but, as Benny Peiser points out on CCNet, the known large
NEO population is in pretty good agreement with the cratering rates on
terrestrial plaanets) (CC)
- 19 Oct 04 The Scotsman: Roman Comet 5,000 Times More Powerful Than
A-Bomb.(speculative - CC)
- 19 Oct 04 Spitzer Space telescope/NASA: Astronomers
Discover Planet Building is Big Mess.
- 18 Oct 04 BBC: Satellite
smashes Chinese house
- 16 Oct 04 Australian Risk Engineering Conference - Melbourne
8-9 Nov 04 - RISK 2004.Keynote Speaker - Duncan Steel
- 16 Oct 04 Space.com: In
Extinction Debate, Dinosaurs and Science Writers are the Losers.
(see also Did
Asteroid-Induced Firestorm Destroy the Dinosaurs?)
- 16 Oct 04 NewSci: DINOSAURS
WERE STRUCK DOWN IN THEIR PRIME (CC)
- 16 Oct 04 The Daily Californian: Researchers Put
New Date on Extinction - Scientists Use Improved Techniques to
Revise Date of [PT] Mass Extinction (CC)
- 15 Oct 04 Financial Times (subs reqd): Shock
Waves - Fears that a volcanic
eruption in the Canary Islands could send a 25-metre-high tsunami crashing into the US coast have been
momentum. But rival scientists dismiss the prediction as a hugely
unlikely worst-case scenario. Who do we believe? ... And even if the La
Palma tsunami were not to be quite so immense, it would still be
classified as a flood, explains Bob Hartwig, chief economist of the
Insurance Information Institute in New York. And floods are, generally,
not covered under most property insurance. As far as catastrophic
events go, insurance companies are more worried by what lurks in the
heavens. "Meteors," says Hartwig, "they're covered by insurance, but
not factored into premiums. If a meteor similar to the one that hit
Siberia in 1908 were to hit western Europe or the north-east United
States, we could go bankrupt."
- 14 Oct 04 NASA: Debating the
Dinosaur Extinction + Great Impact Debates.
- 13 Oct 04 ABC: Asteroid
did not end dinosaurs: NZ scientists +
Trends in Ecology & Evolution:
The rise of birds and mammals: are microevolutionary processes
sufficient for macroevolution?
- 13 Oct 04 BBC: Drilling
for Africa's climate history (impact crater formed a lake in Ghana
1million years ago). "Deep Impact - Ghana" will be broadcast on the BBC
World Service's Discovery Programme on Wednesday 13 October at 0905GMT
- 12 Oct 04 Space.com: Comet
Crashing Mission Prepped For Launch
- 10 Oct 04 EPSL: Impact melt rocks from the Ries structure,
Germany: an origin as impact melt flows? Abstract
+ Erratum to “Yarrabubba—a large, deeply eroded impact structure in the
Yilgarn Craton, Western Australia” [Earth Planet. Sci. Lett. 213 (2003)
- 7 Oct 04 Ball Aerospace: Deep Impact
Spacecraft and Impactor Complete Environmental Testing.(CC)
- 7 Oct 04 The Guardian: Space
Evaders (lack of action in UK. Note that the image seems to be an
asteroid entering the Earth's atmosphere - not "passing the
- 7 Oct 04 Yahoo (Germany): Größtes
Meteoritenfeld der Welt in Südägypten entdeckt (a team of
French-Egyptian researchers has discovered the largest meteorite field
of the world in the south of Egypt). (CC)
- 6 Oct 04 UT: Centre
of the Milky Way Sterilized by Blasts
- 4 Oct 04 SpaceDaily: ESO Views Of
Earth-Approaching Asteroid Toutatis
- 3 Oct 04 GCA (abstract): Beryllium-10
in Australasian tektites: Constraints on the location of the source
- 3 Oct 04 S&T: TOUTATIS
ENCOUNTERS EARTH -- AND MISSES (THIS TIME)
- 3 Oct 04 Space.com: See
Video of Huge Asteroid Flying Past Earth Today (29 Sep!)
- 28 Sep 04 UT: Toutatis
Sneaks Past the Earth on Wednesday + NAI: Toutatis: Almost
Too Close for Comfort
- 21 Sep 04 Space.com: Newfound
Comet Set for Winter Display
- 21 Sep 04 Discovery News: Massive
[PT] Die-Off Date Pinpointed.(CC)
- 18 Sep 04 SMH: The Great Dying
The greatest mass extinction in Earth's history was triggered by huge
volcanic eruptions, Australian research shows.
- 16 Sep 04 NAI: The Other Mars
Meteorite - from a saltwater lake?
- 11 Sep 04 The Scotsman: ASTEROID AND
COMET IMPACTS MAY HAVE BROUGHT LIFE TO EARTH (CC) - see also Asteroids:
now for the good news - a talk given at Macquarie Uni one year ago.
- 8 Sep 04 BBC: Noah's
Ark plan from top Moon man - there
should be a Noah's Ark on the Moon, in case the Earth is destroyed by
an asteroid or nuclear holocaust. [the money would be better
spent on avoiding the calamity!]
- 1 Sep 04 BBC: Comet
pioneer Fred Whipple dies - He
was the first scientist to describe comets as "dirty snowballs".
- 31 Aug 04 UT: What
Impact Would Set the World on Fire? SWRI News
- 30 Aug 04 PSRD: Meteorite
Shower in Park Forest, Illinois.
- 30 Aug 04 SpaceDaily: Small
asteroid gives Earth its closest shave.
- 21 Aug 04 NewSci: Doomsday wreck in Thames could blow
A cargo of bombs that sank in the Thames during World War II could
cause one of the biggest non-nuclear explosions ever (apart from
Krakatoa, Tunguska... maybe they mean non-nuclear, non-natural).
- 21 Aug 04 SpaceDaily: Cooking On A
Comet..? Rosetta mission instruments.
- 20 Aug 04 BBC:
Antarctic craters reveal strike - the report is rather fuzzy about
the size and distribution of craters and should be treated with
skepticism. If it is 780,000 years old then
it co-incides with the Australasian
Tektite event (but is in the "wrong" location). The 30th Congress of
the International Geographical Union. + The
- 19 Aug 04 ABC: Boffins
examine 'meteorite' that hit woman
- 17 Aug 04 George Mason Uni: Run To The
Hills! La Palma "mega-tsunami" + Dr. George Pararas-Carayannis: EVALUATION
OF THE THREAT OF MEGA TSUNAMI GENERATION FROM POSTULATED MASSIVE SLOPE
FAILURES OF ISLAND STRATOVOLCANOES ON LA PALMA, CANARY ISLANDS, AND ON
THE ISLAND OF HAWAII
- 17 Aug 04 EPSL: Basaltic
explosive volcanism, but no comet impact, at the Paleocene-Eocene
boundary: high-resolution chemical and isotopic records from Egypt,
Spain and Denmark +
Flood deposits penecontemporaneous with ~0.8 Ma tektite fall in NE
Thailand: impact-induced environmental effects? (see also Environmental effects of impacts)
- 13 Aug 04 Science: Probing
the Accumulation History of the Voluminous Toba [super-volcano] Magma.
- 13 Aug 04 Space.com: Russian
Alien Spaceship Claims Raise Eyebrows, Skepticism. Comment:
airbursts, with little evidence reaching the ground, are the most
common type of cosmic
impact likely to result in fatalities.
- 12 Aug 04 EPSL Abstracts: Isotopic
evidence bearing on Late Triassic extinction events, Queen Charlotte
Islands, British Columbia, and implications for the duration and cause
of the Triassic/Jurassic mass extinction "While there is no definitive evidence as
to cause, the isotopic record does not appear similar to that of the
impact-caused Cretaceous/Tertiary boundary extinction" + Nanosized
carbon-rich grains in carbonaceous chondrite meteorites.
- 10 Aug 04 Spacedaily: Perseids To
Storm August 11?
- 10 Aug 04 BBC: Nature
'mankind's gravest threat' + ABC: Scientist
warns of tsunami in the making ... On a brighter note, scientist Benny Peiser
of John Moores University in Liverpool told the same news conference
that the threat of a cataclysmic strike on the earth by a large
asteroid was fading rapidly as money was pumped (?) into finding them.
He says that within 10 to 30 years, all the near-earth asteroids will
have been charted and scientists believe they can find a way to steer
an asteroid out of the way of the earth, as long as they have enough
warning it is coming. BUT see also Tsunami Society 2003: MEGA TSUNAMI HAZARDS
- We would like to halt the scaremongering from these unfounded
reports [that collapse of volcano flanks might cause ocean-wide
"mega-tsunami"] . Regarding Dr Peiser's comments, there are still
plenty of gaps in our defences and no sign of serious support from
governments outside the USA and Japan. With sufficient resources there
is the potential, within a decade or so, to eliminate the threat of
global catastrophe from short period asteroids. The threat of local
catastrophe from a Tunguska-like airburst will take much longer to deal
with, as will the global threat from long period comets and asteroids.
- 7 Aug 04 TPS: CALL FOR
POPOSALS: The 2004 Gene Shoemaker NEO Grant (deadline 1 Oct 04)
- 4 Aug 04 BBC:
Public invited to hunt meteorites + Moon
rock 'biography' revealed
- 30 Jul 04 Science: Pinpointing
the Source of a Lunar Meteorite: Implications for the Evolution of the
Moon + A
Unique Chunk of the Moon.
- 29 Jul 04 American Astronomical Society: David Morrison is
awarded the 2004 CARL SAGAN MEDAL
FOR EXCELLENCE IN PUBLIC COMMUNICATION IN PLANETARY SCIENCE -
- 28 Jul 04 NewSci: Stray
star may have jolted Sedna
- 27 Jul 04 Space.com: Double
Whammy: Asteroids Delivered One-Two Punch + White House
Threatens to Veto Budget Bill Over NASA Cuts.
- 27 Jul 04 UT: Get
Ready for the Perseids
- 27 Jul 04 BBC: Probe to
'look inside' asteroids
- 25 Jul 04 S&T: COMET
SHOEMAKER-LEVY 9: A DECADE LATER,
- 18 Jul 04
Global and Planetary Change: Volcanic
eruption frequency over the last 45 ky as recorded in
Epica-Dome C ice core (East Antarctica) and its relationship with
climatic changes (abstract)
- 17 Jul 04 S&T: 2004 COMET
AWARD WINNERS - Two Australians will share the sixth annual Edgar
Wilson Award for amateur
- 16 Jul 04 SpaceDaily: ESA
Considers The Next Step In Assessing The Risk From Near-Earth Objects
- no plans to detect NEOs from space (CC).
- 15 Jul 04 Space.com: Crash
Planning: Mission to Deflect an Asteroid. [ESA mission]
- 15 Jul 04 Nature: Fast
delivery of meteorites to Earth after a major asteroid collision.
- 8 Jul 04 Space Review: Giant bombs on
giant rockets: Project Icarus.(CC)
- 5 Jul 04 UT: Asteroids
Make Tau Ceti [stellar system] Lethal
- 26 Jun 04 Asteroid/Comet Connection:
Today (26 Jun) the half-kilometer long 25143 Itokawa (1998
SF36) is passing five lunar distances from Earth.
- 23 Jun 04 Space.com: Texas
Hit by Asteroid 58 Million Years Ago + Earth
Hit by Neighbor in Making of Moon.
- 19 Jun 04 Space.com: Surprise
Meteor Shower Possible in June + Strange
Comet Unlike Anything Known.
- 18 Jun 04 NASA: NASA
Spacecraft Reveals Surprising Anatomy Of A Comet. (Stardust)
- 17 Jun 04 SMH: "Meteorite"
sighted on NSW south coast - dubious report
- 14 Jun 04 Guardian: METEORITE
GATECRASHES [NZ] BREAKFAST (CC)
- 10 Jun 04 Comet Hoax: "IMPACT IN JUNE" - AN
ELABORATED HOAX + "END OF THE
WORLD" NARROWLY AVERTED + Scientific
holes in the hoax arguments (CCNet 86/2004)
- 10 Jun 04 BBC: Ice
cores unlock climate secrets - A three-kilometre long column
of ice drilled from the Antarctic has revealed climate patterns for
last 740,000 years of Earth's history, Nature
reports [just missed the Australasian
- 10 Jun 04 Nature: [Very] High
levels of atmospheric carbon dioxide necessary for the termination of
- 7 Jun 04 BBC: Methane
'belch' theory gets boost - global warming 55 million years ago.
(see Nature link, 3 Jun)
- 3 Jun 04 Space.com: Scientists
Dig into Chesapeake Bay Impact Crater.
- 3 Jun 04 Nature: Geochemical
evidence from the Sudbury structure for crustal redistribution by large
bolide impacts + Release
of methane from a volcanic basin as a mechanism for initial Eocene
- 1 Jun 04 Astrobiology; Dinosaur
Era Ended Instantly
- 1 Jun 04 Nature: Dusty nursery
bears baby comets
- 1 Jun 04 BBC: Dino
impact gave Earth the chill from Geology
- 27 May 04 Eurekalert:
Records of post-K-T boundary millennial-scale cooling from the western
Tethys: A smoking gun for the impact-winter hypothesis? (CC)
- 26 May 04 UT: Asteroid
Wiped Out the Dinosaurs in Hours - confirmation of environment effects.
- 26 May 04 BBC: Volcano
'drove up UK death toll' - An extended eruption in Iceland in 1783
may have killed more than 10,000 people in England.
- 25 May 04 LPS 2004; METEORITES
FROM MARS – CONSTRAINTS FROM NUMERICAL MODELING. N. Artemieva and B.
Ivanov.(PDF) (CC) - see also other
microplanet papers by Artemieva and co.
- 21 May 04 UT: ASTEROIDS
CHANGE COLOUR WITH AGE + New
Photo of Comet NEAT
- 21 May 04 NewSci: Nanobacteria
revelations provoke new controversy (but no mention of Australian research)
- 20 May 04 Space.com: Asteroid
Eaters: Space Rock Hunting Robots That Could Protect Earth + NASA
Lab Processes, Stores Meteorites.
- 14 May 04 Bedout Structure and the P/T
- 14 May 04 Science: The
Giant Impact Formation of the Moon.
- 11 May 04 SMH: [Australian] War on terrorism triggers $1.8bn boost - not one cent for Spaceguard!
- 11 May 04 ESA: Rosetta spacecraft has
made its first scientific observations of the comet Linear.
- 11 May 04 NewSci (subs): FOUR
DAYS THAT SHOOK THE WORLD (speculative alternative to impacts)
- 11 May 04 CCNet: Impact
ejection from Earth by Max Wallis.
- 9 May 04 EPSL abstracts: The
hazard of near-Earth asteroid impacts on earth by Clark Chapman
(stresses the need for better planning) PDF
- 9 May 04 GCA abstracts: Extensive
impact melting on the H-chondrite parent asteroid during the
cataclysmic bombardment of the early solar system: Evidence from the
achondritic meteorite Dar al Gani 896 + Meteorites,
ice, and antarctica. - William A. Cassidy. A personal
account + Petrology
and shock metamorphism of the olivine-phyric shergottite [Martian
meteorite] Yamato 980459 - Evidence for a two-stage cooling and a
single-stage ejection history - Its
near surface position allowed the ejection
from the planet's surface already by a single impact event and at
relatively low shock pressures.
- 8 May 04: Mass
Extinctions of Life: An Update on Astrophysical Causes - online
paper by Charles
- 4 May 04 Space.com: City-Sized
Asteroid to Pass Earth This Fall.
- 4 May 04 SpaceDaily: Anger
as Australia cuts funds to Great Barrier Reef research centers - Science Minister Peter McGauran
confirmed Monday that three cooperative research centers (CRC) focussed
on the Great Barrier Reef World Heritage Area would not be funded
beyond 2005 because they had failed
to meet government budget guidelines. He said the centers --
collaborative efforts between universities, state agencies and the
private sector -- failed to
draw greater industry participation into their work and to
commercialise their research. What hope for Spaceguard?
- 21 Apr 04 SFC: IMAGINATION
TAKES FLIGHT ON WINGS OF SPACE VISIONARIES (CC)
- 21 Apr 04 Space.com: When
Meteors Explode: Full Account of a Wild Chicago Night. + New
Comet Sports Nice Tail.
- 20 Apr 04: PLANETARY
DEFENCE AT LEARMONTH SOLAR OBSERVATORY - Western Australia (thanks
Jay Tate and CCNet)
- 19 Apr 04 Space.com: Three
Chances to Spy Comets
- 19 Apr 04 Astrobiology Journal (subs): Early
Impact-Triggered Tsunami: Excavated Seabed, Debris Flows, Exotic
Boulders, and Turbulence Features Associated with 3.47-2.47 Ga-Old
Asteroid Impact Fallout Units, Pilbara Craton, Western Australia by
Andrew Glikson +
- 19 Apr 04 Astrobiology Magazine: The Greatest
Catastrophe on Earth (P/T).
- 19 Apr 04 BBC: Could we
survive an asteroid hit? (CC)
- 19 Apr 04 PSS: Deflection
of near-Earth asteroids by kinetic energy impacts from retrograde orbits
- 9 Apr 04 Uni Arizona: ASTRONOMERS
TAKE SEARCH FOR EARTH-THREATENING SPACE ROCKS TO SOUTHERN SKIES -
Rob McNaught's project comes online + WEB-BASED PROGRAM
CALCULATES EFFECTS OF AN EARTH IMPACT + SpaceDaily
- 9 Apr 04 Space.com: Experts Call
on Senate for Support for Near-Earth Object Search.
- 9 Apr 04 BBC: Asteroid
protection plan proposed - US astronauts are calling for an
unmanned mission to test ways to deflect an asteroid threatening to
strike the Earth.
- 5 Apr 04 S&T: FAULKES
TELESCOPE PROJECT LAUNCHED
- 5 Apr 04 PSRD: Asteroid
Heating: A Shocking View.
- 3 Apr 04 Times Ledger: BIPARTISAN
SUPPORT GROWING FOR SMALL NEO SEARCHES (CC)
- 2 Apr 04 BBC: Double
whammy link to extinctions - see also 9 Dec 02 EPSL: Extraterrestrial
influences on mantle plume activity
- 1 Apr 04 ABC: Queensland
(Australia) abuzz with fireball yarns (but watch the date!)
- 1 Apr 04 The Independent: THE
COSMIC TIMEBOMB (CC)
- 27 Mar 04 NASA Stardust: Composite and
Stereo Images of Comet Wild 2. + LPSC2004 papers
- 25 Mar 04 Nature: Retrograde
spins of near-Earth asteroids from the Yarkovsky effect
- 22 Mar 04 BBC: Detailed
picture of comet's heart.
- 22 Mar 04 Space.com: Asteroid
Scare Prompts NASA to Formalize Response.
- 20 Mar 04 THEMIS: Mars
- 20 Mar 04 Space.com: Crazy
Comet: 'Wild' Surface Seen Up Close + Viewer's
Guide: Spot a Comet from Your Backyard
of Asteroid's Close Brush with Earth
- 20 Mar 04 SpaceDaily: Will Space
Junk Bring Down The Space Initiative [ISS] - Protecting the
Space Station from Meteoroids and Orbital Debris (1997 report) + Space Debris + International
Space Station Debris Avoidance Operations.
- 19 Mar 04 BBC: Space
rock makes closest approach.[25 metre diameter, 43,000km closest
Press Release (CC)
- 19 Mar 04 homeplanetdefense.org:
- Planetary Defense against Asteroids and Comets: (CC)
- 18 Mar 04 Nature: A
'snowball Earth' climate triggered by continental break-up through
- 15 Mar 04 BBC: Astronomers discover 'new planet' (what is a
- 14 Mar 04
Geochimica et Cosmochimica Acta:
Volume 68, Issue 6 Hydropyrolysis of insoluble carbonaceous matter
in the Murchison meteorite: new insights into its macromolecular
structure + Hydrogen isotope evidence for the origin and evolution of
chondrites + Pt-Re-Os systematics of group IIAB and IIIAB iron
- 13 Mar 04 BBC: Government
'ignores' space threat + Rocks
picked for Rosetta meeting.
- 11 Mar 04 CCNet: BRITISH
GOVERNMENT ANNOUNCES IT WON'T IMPLEMENT MAIN RECOMMENDATIONS OF NEO
TASK FORCE (CCNet 35/2004 - 10 March 2004 )
- 11 Mar 04 Space.com: Avoiding
A “Crash Course” In Planetary Defense.
- 10 Mar 04 PSRD: Tiny
Traces of a Big Asteroid Breakup.
- 10 Mar 04 SMH: $550m
buys mates' rates on [59 second hand] US tanks - a coincidence
following the 8 Mar item! One fifth of the cost one second hand tank
would buy a complete Spaceguard telescope facility and the change would
fund operation of the program for some 15 years.
- 8 Mar 04 Harper's magazine: A Run on Terror - The
rising cost of fear itself. A quick review of risks in society and
some extraordinary reactions to so-called threats. See also Sceptical
Inquirer: How We
Can Defeat Terrorism by Reacting to It More Rationally (Sep 2002) -
Postscript: The Harper's article was written just before the Madrid
atrocity and points out that the most likely scenario for terrorism is
the use of low tech weapons in everyday situations that maximise the
fear in people throughout society. This is aided by sensational media coverage and speculation.
- 4 Mar 04 PNAS: Chicxulub
impact predates the K-T boundary mass extinction (CC) - see Jan Smit's
- 2 Mar 04 BBC: Dinosaur impact
theory challenged (CC - see also this debate)
probe heads for comet.
- 28 Feb 04 BadAstronomy: THE
ASTEROID IMPACT THAT WASN'T - excellent review of the recent
"scare" (CC). The AL00667
incident reinforces the point that Spaceguard is woefully
- 27 Feb 04 Science: Look,
Up in the Sky! It's a Threatening Asteroid!
- 27 Feb 04 EPSL: The
Quaternary impact record from the Pampas, Argentina - evidence for
at least four separate Quaternary impacts.
- 26 Feb 04 Space.com: Pair
of Comets Set for Spring Sky Show + Earth
At Risk: New Calls For Planetary Defense. - Developing a viable mitigation campaign,
Yeomans explained, demands three prerequisites: "You need to find them
early. You need to find them early. And we need to find them early."
- 25 Feb 04 SpaceDaily: From Mythical
Omens Of Doom To Object of Great Desire - Rossetta mission
- 25 Feb 04 BBC: Earth
almost put on impact alert.
- 25 Feb 04 Space.com: Planetary
Defense: Planning with Phantom Asteroids.
- 21 Feb 04 BBC: New
world found far beyond Pluto....Looking
back in their archives
astronomers have already picked up the new object in images taken in
2002. They will use this observation, and any others they may find
further back, to determine its orbit more accurately. Maybe
1800km in diameter - a planet or microplanet?
- 20 Feb 04 IAU: Working Group on Near-Earth Objects
Information on Near-Earth Object AL00667
STATEMENT ON DEALING WITH SHORT-TERM IMPACT PREDICTIONS
Issued by the IAU
Working Group on NEOs (WGNEO).
Issue date: 2004 February 19
On the night of January 13/14, 2004, the international asteroid science
community faced an unprecedented situation, with an initial prediction of an impact of a
small [30m - if it had been as close as first thought] asteroid on the
Earth within a few days. [It missed us by
millions of km]
- 19 Feb 04 USA Today: Think
outside moon-Mars box: Maybe visit asteroid? by James Oberg (CC)
- 15 Feb 04 US Congress: George
R. Brown Near-Earth Object Survey Act (thanks Richard Haase, Space Frontier Foundation)
Comment: This has clearly become a defence and security issue in the US
and is no longer considered a scientific oddity. A pro-rata funding in
Australia would be about $2 million per year, which would be more than
adequate to fill the Spaceguard gap in southern skies.
- 12 Feb 04 PSS: Spectral
observations for near-Earth objects including potential target 4660
Nereus : Results from Meudon remote observations at the NASA Infrared
Telescope Facility (IRTF)
- 10 Feb 04 NZ Herald: Expedition
hunts giant meteor [sic]. Thanks Steve Ward. Tsunami research.
- 6 Feb 04 BBC: Dino
'survival' claim disputed - The idea that dinosaurs survived for
some time after the asteroid impact blamed for wiping them out 65
million years ago has been dealt a blow.
- 5 Feb 04 Nature: Change
partners in the Kuiper belt +
Mixing, volatile loss and compositional change during impact-driven
accretion of the Earth
- 4 Feb 04 Astronomy
& Geophysics v45.1 Feb04: A
COMET IMPACT IN AD 536? (Abstract - full text at CCNet?)
- 4 Feb 04 ABC: [Aust] Govt details
$50 billion defence plan - including Spaceguard allocation of...
- 1 Feb 04 Science Direct: Causes
and consequences of extreme Permo-Triassic warming to globally equable
climate and relation to the Permo-Triassic extinction and recovery
(abstract). No mention of possible post-impact
Greenhouse effect (assuming a
major impact is associated with PT. PSRD
- 1 Feb 04 UCSB: Exploring
Antarctica: understanding life on Earth and beyond - research by
Luann Becker, especially PT boundary sites.
- 31 Jan 04 NG: Scientists
Plan "Deep Impact" Crash With Comet (CC)
- 28 Jan 04 Space Review: Near Earth
asteroids: the third option (the other two are Moon and Mars)
(CC) - Asteroids
are easier to reach and have better resources.
- 28 Jan 04 Washington Square News: Preparing
for a ‘deep impact’ in NYC. (CC)
- 27 Jan 04 AIAA: 2004 Planetary Defense Conference:
Protecting Earth from Asteroids - Orange County, California
23 - 26 Feb 2004 - program now online. Thanks Andy Smith.
- 27 Jan 04 Space.com: Elusive
Vulcanoids: Search Reaches New Heights
- 24 Jan 04 Science: Comment on "Impact Ejecta Layer from the
Connection to Global Mass Extinctions"
Grzegorz Racki and Christian Koeberl http://www.sciencemag.org/cgi/content/full/303/5657/471b?etoc
Response to Comment on "Impact Ejecta Layer from the Mid-Devonian:
Possible Connection to Global Mass Extinctions"
Brooks B. Ellwood, Stephen L. Benoist, Ahmed El Hassani, Christopher
Wheeler, and Rex E. Crick
- 24 Jan 04 Spacewatch: Online
Spacewatch Volunteer Discovers Close-Approaching Asteroid (CC) -
Human observers are still much better than computers at finding FMOs in
Spacewatch images. But the work is too time intensive for on-duty
Spacewatch observers. So the astronomers have turned to 30 volunteers
for help. FMO project volunteers are based in the United States,
Germany, and Finland.
They would gladly accept more. The only requirements are interest,
sharp eyes, and access to a
computer when astronomers are operating Spacewatch telescopes on Kitt
Peak. More details on how to volunteer for the FMO Project are on the
Web at FMO
- 23 Jan 04 Yahoo: Scientists
investigating possible meteorite crash in southwestern Germany
- 23 Jan 04 NewSci: Big
chill killed off the Neanderthals (see CCNet for some
- 22 Jan 04 ABC Radio: Cash
for Comet - space mining
- 21 Jan 04 Nature: Volcanic impact
not so chilling - Super-eruptions might
not be as environmentally devastating as we thought (CC) [but would
still devasate our civilisation due to several years of crop failures]
- 17 Jan 04 Earth2Class: DID A
BOLIDE IMPACT CAUSE CATASTROPHIC TSUNAMIS IN AUSTRALIA AND NEW ZEALAND?
- 14 Jan 04 Space.com: Comet Approach!
Animation of Stardust Craft's Flyby
- 11 Jan 04 EPSL: Contemporaneous
mass extinctions, continental flood basalts, and
`impact signals': are mantle plume-induced lithospheric gas explosions
the causal link? (abstract)
- 11 Jan 04 BBC: Stardust
probe makes comet flyby
- 11 Jan 04 NAI: Museum of the
Galaxies (Stardust mission)
- 11 Jan 04 SpaceDaily: In Wake
Of Stardust Flyby, Hayabusa Aims For Asteroid Sample Return + US
probe captures thousands of comet particles
- 18 Dec 03 SpaceDaily: Double
Impact Crater Site Found In Libya Using JERS-1 Data.
- 10 Dec 03 Nature: Roast dinosaur
off the menu? + BBC: No fiery
extinction for dinosaurs.(CC)
Comment: Absence of evidence is not evidence of absence!
Phillip Ball's piece in Nature is not very credible. If he looks at
page 74 of this month's Scientific
American he will see an excellent map by David Kring and Dan Durda
that shows the Chicxulub wildfires were unevenly distributed around the
globe with concentrations around (present day) Mexico and the Indian
Ocean. Also the caption for the image "Some argue hot meteorite
debris could have ignited vegetation wherever it fell to earth" is
poorly worded. It was the radiant heat from millions of meteors that
baked the surface of the planet and created the wildfires.
It was most likely a combination of severe
environmental effects from the impact that did
the dinosaurs in.
- 9 Dec 03 Cardiff Uni Centre for Astrobiology:
Microbial Extremophiles and Astrobiology, Cardiff Centre For
School of Earth, Ocean & Planetary Sciences, Prof. Richard Hoover
(Head of NASA Astrobiology programme
Tuesday 9 December at 5.15 pm. Earth Sciences Large Lecture Theatre.
Contact Max Wallis <wallismk(at)Cardiff.ac.uk>.
- 9 Dec 03 Cardiff Uni: World leading robotic telescope
project comes to Cardiff - The
Faulkes Telescope project, which consists of two research-grade
2-metre telescopes in Hawaii and Australia funded by the Dill Faulkes
Educational Trust, will allow school students and undergraduates to
undertake "real time" robotic observing sessions via the Internet,
gathering data in support of international collaborations. Users will
participate in a range of exciting research programmes, ranging from
studies of rogue asteroids in our
local neighbourhood to observations of
the largest structures in the Universe.
- 9 Dec 03 ESA: Hypervelocity
Impact Symposium - Noordwijk, the Netherlands during December 8-11,
|Session 9: Asteroids Impacts
Wednesday 10 December 2003
Chair: Jean-Marc Sibeaud /Walter Flury
||Two and Three Dimensional Simulations of Asteroid Ocean Impact
Gisler, G.*; Weaver, R.*; Mader, C.* Gittings, M.**
*Los Alamos National Laboratory, **Science Applications International
||Loading Sources for Seismological Investigations of Asteroids
Walker, J. Southwest Research Institute
||Molecular Synthesis in Hypervelocity Impact Plasmas on the
Primitive Earth and in Interstellar Clouds
Managadze, G*; Brinckerhoff, W.**; Chumikov, A.*
*Space Research Institute, Moscow; **John Hopkins University
||Cometary Impacts into Ocean:
Thermochemical Equilibrium Calculations of High Temperature Oxygen
Generation on the Early Airless Earth
Premovic, P. University of Nis
- 6 Dec 03 NASA: NASA Scientists
Use Radar to Detect Asteroid Force. + Stardust Status Report:
Trajectory Correction Maneuver 10 was successfully executed on December
- 4 Dec 03 NAI: Repeated
Blows: The Great Dying (possible PT impact)
- 2 Dec 03 NASA: STUDY TO
DETERMINE THE FEASIBILITY OF EXTENDING THE SEARCH FOR NEAR-EARTH
OBJECTS TO SMALLER LIMITING DIAMETERS (1.2Mb PDF)
- Report of the Near-Earth Object Science Definition Team
- August 22, 2003
- 1 Dec 03 USNews.com: A
blast from heaven? (debate over a recent mega-tsunami in the South
Pacific - thanks Steve Ward) + GSA: DID A
BOLIDE IMPACT CAUSE CATASTROPHIC TSUNAMIS IN AUSTRALIA AND NEW ZEALAND?
Fires of Tamaatea”: Attempts to creatively rewrite New Zealand’s
cultural and tectonic past, by James Goff, Journal of the Royal
Society of New Zealand
- 27 Nov 03 MGS: [Secondary] Crater
Cluster Near Pathfinder.
- 26 Nov 03 SpaceDaily: Greatest
Extinction Probably Caused By Meteorite Or Comet Impact
- 21 Nov 03 Space.com: Controversial
New Claim in Death-by-Asteroid Case - from Science(subs
- 20 Nov 03: PhD student Peter Schulte has several publications
about the Chicxulub impact.
- 20 Nov 03 Nature: Proxy
evidence for an El Niño-like response to volcanic forcing. -
- 19 Nov 03 SciAm: The Day the World Burned - Chicxulub impact (payment
needed for full article)
- 18 Nov 03 Santa Cruz Sentinel: UCSC
seismologist prepares for tsunami.(CC)
- 18 Nov 03 Nature: Earth's
asteroid risk reduced (slightly) - from Icarus: Keck
observations of near-Earth asteroids in the thermal infrared
- 18 Nov 03 BBC: Huge
rock-ice body circles Sun (a newly discovered KBO)
- 17 Nov 03 GCA: Factors
controlling compositions of cosmic spinels: application toatmospheric
entry conditions of meteoritic materials
- 12 Nov 03 IMO: Leonid
predictions for 2003 - download the PDF
by Vaubaillon, Lyytinen, Nissinen, and Asher (CC)
- 12 Nov 03 NASA: The
Leonid meteor shower is coming. Twice.
- 5 Nov 03 BBC: Nearest
Milky Way companion found - a colliding galaxy is only 25,000 light
years away from us! This does suggest that the Milky Way is not as
stable a place as we had thought. Every 250 million years the Sun
completes an orbit of the Milky Way. Now it seems there are a few
hazards on the way round. It is possible that gravitational perturbations from colliding
galaxies might disturb the Oort Cloud and send comets towards the
inner solar system (this is
speculation on my part).
- 4 Nov 03 CCNet: K/T MASS
EXTINCTION DEBATE KICKED WIDE OPEN
AGAIN + GSL
- 4 Nov 03 SpaceDaily: Hydrogen
Sulfide, Not Carbon Dioxide, May Have Caused Extinctions
- 29 Oct 03 SpaceDaily: Sunlight Makes
Asteroids Spin In Strange Ways + Worried
Asteroid-Watchers Wrangle Over Alert system
- 27 Oct 03 SciAm: Penny-Wise,
inner solar system, there's a rock with our name on it. Literally. In
March the International Astronomical Union named a newly discovered
asteroid 14145 SciAm, on the recommendation of its discoverer, Edward
Bowell of Lowell Observatory. Fortunately for the magazine's public
relations image, the asteroid does not cross paths with Earth. Others
after whom asteroids are named may not be so lucky. As most people now
recognize, killer rocks are a fact of life on our planet. Doubters can
ask the dinosaurs for their opinion.
Is the world doing enough
to cope with the threat of impacts? In
this issue, a team of scientists and astronauts argues for going beyond
the current telescope surveys to begin developing a rocket that could
land on an asteroid and push it out of the danger zone [see "The
Asteroid Tugboat,"]. The project could cost $1 billion, spread out over
a decade or so. Is it worth it? (subscription needed for more
- 26 Oct 03 BBC: Europe
gears up for comet chaser.
- 24 Oct 03 Denver Post: GROUP
SEEKS TO ZAP ASTEROIDS. (CC)
- 24 Oct 03 Cornell: Asteroid
Hermes, Lost For 66 Years, Is Found To Be Two Objects Orbiting Each
- 19 Oct 03 EPSL (abstracts): Dike
formation, cataclastic flow, and rock fluidization during impact
cratering: an example from the Upheaval Dome structure, Utah + Rapid
eruption of Siberian flood-volcanic rocks and evidence for coincidence
with the Permian-Triassic boundary and mass extinction at 251 Ma
- 18 Oct 03: International Symposium on Impact Events in Japan,
Southeast Asia and Pacific Rim (IEJSAP), 22-24 November, 2003, Yamaguchi
University, Yamaguchi, Japan - contact Dr Yasunori MIURA.
- 18 Oct 03 JPL: Orbit for Hermes
Dynamically Linked from 1937 to 2003 (NNN CC)
- 17 Oct 03 TPS: Meteors
(meteorites) Raining From the Sky
- 17 Oct 03 Lowell Observ: Lowell
Observatory and Discovery Communications Announce Partnership To Build
Innovative Telescope Technology (including NEOs)
- 17 Oct 03 S&T: Hermes Is
Found (after 66 years)
- 14 Oct 03 SciAm:The
Asteroid Tugboat (summary) -To prevent an asteroid from hitting
Earth, a space tug equipped with plasma engines could give it a push
- 13 Oct 03 NG: DID
COMETS MAKE LIFE ON EARTH POSSIBLE? (CC)
- 13 Oct 03 Nola: Meteorite
Hits House In Louisiana (NNN)
- 13 Oct 03 BBC: GLOBAL
DEBATE OVER 'METEOR' SNAP (CC)
- 13 Oct 03 Space.com: Act Approved
for Pete Conrad Asteroid-Hunting Awards
- 13 Oct 03 NASA:
The 2003 Leonid Meteor Shower
Comment: This new report stresses the
risk from small impactors around 150m in diameter. Based on the simulation software
John Lewis it is
possible that this report underestimates the risk from slow-moving,
shallow-angle or iron asteroids that penetrate deeper into the
atmosphere and hence deliver more explosive energy to the ground. On
the other hand, the risk
A "scare" was unwarranted and there
are the usual mis-informed headlines around the world. HOWEVER,
made up to the time of the UK NEO news release had indicated that the
chances of an impact in 2014 were about 1 in a million. This is
slightly greater than the "background
risk" of an undiscovered asteroid of similar size hitting us in the
12 months. More recent follow-up observations have all but eliminated
the risk of an impact in 2014. This is a large object (more than 1km
across and capable of global
environmental destruction - see
). Also, for this size object, it is
unusually short "warning time"
prior to a possible collision
It is quite possible that it would have been detected in southern
several years ago if the Australian Spaceguard Survey had been in
operation (it was shut down in 1996). In any case southern sky
observations over the past six years may have been useful for
eliminating the threat (absence of an object in an image can assist in
pinning down its orbit and eliminating a "virtual impact" prediction by
- 2 Sep 03 BBC: Asteroid warning
for 2014 (but odds are around 1 in a million and are likely to get
better as more observations are made). UK
NEO Information Centre item. NASA data.
- 1 Sep 03 ACA: Asteroids - now
for the good news. Talk by Mark Sonter and Michael Paine, Macquarie
Uni, Sydney, 1pm Sep 11.
- 30 Aug 03 SBS TV (Sydney): As It Happened - The Day The
Earth Nearly Died. 8pm Sat 30 Aug. 250 million years ago,
long before dinosaurs roamed the Earth, the land
and oceans already teemed with life. This documentary investigates the
cause of the so-called Permian extinction
Aug 03 NASA DPS 2003: Assessing
the Human Hazard from Impact-generated Tsunami - by Chesley and
Ward + [status of] The
Catalina Sky Survey and Siding Spring Survey NEO surveys.
- 23 Aug 03 NASA: New detailed
relief map of the world - the extract at right clearly shows the
ancient Acraman impact crater in South Australia (caution - the NASA
JPG is 16Mb!)
- 23 Aug 03: The 32nd
International Geological Congress (32IGC) will be held from August
20 to 28, 2004 in Florence, Italy - includes "Catastrophes in Earth
- 23 Aug 03 Popular Scinece: INCOMING:
PLANNING THE NEXT STEPS OF THE SPACEGUARD PROJECT (CC)
- 23 Aug 03 Nature: Boiling seas
linked to mass extinction (CC) - see also Rocks from
Space - impacts may trigger methane releases.
- 23 Aug 03 Economist: The
next big wave - tsunami detection (CC)
Aug 03: Quiet news time? It seems that most researchers in the NEO
field are on leave at present. Hopefully somebody is still keeping
watch in the northern hemisphere. Here is a map of sky coverage (click
for a bigger image) for the LONEOS
search program at Lowell Observatory. Note the gap in southern
skies. Other northern observatories would have similar limits. Thanks
to Ted Bowell from Lowell for the picture - captions were added by me
- 22 Aug 03 Latest issue of Tumbling
Stone. Including a movie illustrating keyhole
- 13 Aug 03 Space.com: Crazy
Names: The Solar System's Nomenclature Wars. See my suggestions.
Aug 03 SMH: Meteorite' narrowly misses Perth boy
- 8 Aug 03 new Sci: Space
- 8 Aug 03 Space.com: Asteroids Named
for Columbia Astronauts. + Report
Sullies Pristine Reputation of Comets.- SWRI report
- 7 Aug 03 ABC TV (Aust): CATALYST - Avoiding
Armageddon - Thursday August 14, 8:00pm - There is a very large
rock heading our way, on a collision course with our planet. The good
news is we have over 800 years to find a way of stopping it, but right
now none of our weapons or technologies
will be effective. This half hour special report from BBC's 'Horizon'
how our planet can protect itself from hundreds of larger asteroids
near the Earth.
- 7 Aug 03 ESA: PERSEID
METEOR SHOWER NEXT WEEK + MPC: ASTEROID JUNO HAS
CHUNK OUT OF IT (UT).
- 7 Aug 03 Nature (abstracts): Unusually
large earthquakes inferred from tsunami deposits along the Kuril trench
evolution of comets in the Oort cloud and Kuiper belt.
- 2 Aug 03 S&T; STUDENT'S
ASTEROID PROJECT WINS INTEL AWARD.
- 1 Aug 03 Caltech: PALOMAR
BEGINS A NEW SKY SURVEY - The researchers plan to publish
images gathered by the telescope onto the web so that other astronomers
can search the
data for near-earth asteroids, Kuiper Belt objects, supernovae and
- 30 Jul 03 Space.com: New
Theory: Catastrophe Created Mars' Moons.
- 30 Jul 03 SciAm: Keeper
of the Objects - Brian Marsden and the Minor Planet Center.
- 30 Jul 03 RASNZ: Occulations
page - This website exists to promote and encourage occultation
observing in New Zealand,
Australia and the South Pacific.
- 29 Jul 03 SpaceDaily; The "Fixed"
Hotspot That Created Hawaii Not Stationary At All - see also this Rocks from space item.
- 29 Jul 03: Photos
Australian Minor Planet Workshop.
- 22 Jul 03 Space.com: Search
for Large Asteroids Nears Completion, Experts Ponder Gaps in Program.
See also this Tumbling
Stone article about Keyholes.
- 19 Jul 03: Steve Ward has created a great new animation of
the Eltanin ocean impact.(direct link to a 5Mb Quicktime
- 18 Jul 03 Space.com:
Small Stony Asteroids Will Explode and Not Hit Earth, Study Shows.
Based on a Nature
article (abstract). See also these
discussions on CCNet (delayed posting) and this press
release. In esssence, the overall risk to mankind is not greatly
affected by this new work - there will be fewer oceans impacts
(but the tsunami
threat from small
asteroids has been downgraded in recent years) but more airbursts
above the land. As with nuclear bombs, airbursts are likely to be more
dangerous than a surface impact.
"It's pretty much the only threat to human populations that
could affect the whole planet," he says. "The tiny amounts of funding
that go towards spotting asteroids and thinking about ways to deflect
them just look woefully inadequate, whether you believe our impact
rates or someone else's."
Phil Bland, New
We write to you today as
convinced that the time has come for our nation to address
comprehensively the impact threat from asteroids and comets. A
growing body of scientific evidence shows that some of these celestial
bodies, also known as Near Earth Objects (NEOs), pose a potentially
devastating threat of collision with Earth, capable of causing
widespread destruction and loss of life. The largest such impacts can
not only threaten the survival of our nation, but even that of
Although we are genuinely concerned about the NEO threat, none of us is
an alarmist. We know of no Near Earth Object currently on a collision
course with Earth, but science’s limited knowledge of
the NEO population cannot rule out that possibility. Base on current
information, a crisis response to these potential threats is not
warranted. That being said, however, based upon evidence of past
impacts and recent asteroid observations as well as the possible
consequences from just one relatively “small” NEO impact, “business as
usual” regarding this threat is simply no longer a responsible or
sensible course of action...
According to NASA, there may be as many as 100,000 NEOs with diameters
of 100 yards or larger. Of those asteroids larger than 150 yards in
diameter, about 250 are estimated to be potentially hazardous.
The United States has very limited capability to detect these
smaller NEOs, which can nevertheless inflict substantial damage upon
striking Earth. There is a significant probability (20%) of such an
object colliding with the Earth during the next century.
the annual probability of a large NEO impact on Earth is relatively
small, the results of such a collision would be catastrophic. The physics of Earth’s surface and atmosphere
impose natural upper limits on the destructive capacity of natural
disasters, such as earthquakes, landslides, and storms. By contrast,
the energy released by an NEO impact is limited only by the object’s
and velocity. Given our understanding
of the devastating consequences to our planet and its people from such
an event, (as well as the smaller-scale but still-damaging effects from
smaller NEO impacts), our nation should act comprehensively
and aggressively to address this threat. America’s efforts to
and then to avoid or mitigate such a threat should be at least
with our national efforts to deal with more familiar terrestrial
urge the Congress to call on this nation’s ready supply of talents and
energies to responsibly address this threat. Our international partners
also should be called upon to help meet this challenge, but the United
States has a compelling responsibility to lead the way.
for Southern Hemisphere search activities may further increase the
discovery rate and should be expanded. Even when NASA achieves
its current goal of identifying 90% of large NEOs, the undiscovered
remainder will, of course, still pose a potential hazard. Congress
should direct NASA to pursue the search for all such objects to
- 1 Jul 03: Now I know why the Australian government spent
millions on an anti-terrorist package for its citizens, It has won
Egregiously Stupid Award from Privacy International!
Thank goodness they didn't waste the money on Spaceguard.
- 25 Jun 03 National Geographic: Killer
Asteroids: A Real But Remote Risk? Note that evacuation of
target zones is an oft-overlooked, low-tech mitigation option.
- 18 Jun 03 SciAm: Bottled
Twaddle - Americans today spend
more than $7 billion a year on bottled water...a blind comparison
in which 75 percent of New Yorkers preferred city tap to bottled waters.
No, nothing to do with Spaceguard but it makes "willingness to pay"
arguments against Spaceguard look pathetic.
- 18 Jun 03 BBC: Mammals'
lucky space impact (55Ma)
- 17 Jun 03: The Australian
Budget for 2003/04 includes:
Disaster Mitigation Australia Package - The Government
will provide funding of $68.5 million over five years including
$16.3 million in 2007-08 to establish a new Disaster
Mitigation Australia Package. This funding will be used to support
cost-effective mitigation policies and reduce the economic and
social costs of natural disasters to individuals, communities and
governments, especially in rural and regional Australia. The package
will include the establishment of a Disaster Mitigation Programme to
support cost-effective mitigation activity based on nationally
consistent data, research and disaster risk assessments. SOUNDS
GOOD, BUT NO MENTION OF ASTEROID IMPACTS!
- 16 Jun 03 Science: Impact
Ejecta Layer from the Mid-Devonian: Possible Connection to Global Mass
- 13 Jun 03 Nature: Second mass
extinction linked to impact (see below) (CC)
- 13 Jun 03 LSU: Evidence
for meteor in early mass extinction found - this could be
associated with the Woodleigh
in Western Australia (NNN)
- 13 Jun 03 BBC: When
humans faced extinction - No reason is put forward for the
bottleneck but it is interesting that the timing (about 70,000 years
coincides with the Tabo
- 12 Jun 03 SpaceDaily: Rosetta
10 Year Trip To Comet Churyumov-Gerasimenko.
- 9 Jun 03: Is there a chance of the
Australian government changing its policy on Spaceguard? To my
surprise the new slogan of the ruling Liberal Party is:
- 8 Jun 03 The Times: Siberia meteorite flattens 40 sq miles - If it had hit Central London, Britain would no longer
have a capital city. The force of the meteorite that hit eastern
Siberia last September destroyed 40 square miles of forest...+
plea for space impact study (CC) Note that this airburst would have
caused many casualties and a lot a damage if it had occured over a populated region
(PDF) but it is unlikely
that sturdy buildings would have fallen.
- 8 Jun 03 Mars THEMIS: Bizarre Crater
- 5 Jun 03 Icarus (abstract): Reseeding
of early earth by impacts of returning ejecta during the late heavy
- 4 Jun 03 SciAm: 2880
Asteroid Impact Simulation Suggests Tsunamis Could Hammer Atlantic
- 29 May 03 Space.com: SIMONE:
Europe's Plan to Explore Near Earth Objects.
- 29 May 03 ESA: Comet-chasing
mission Rosetta will now set its sights on Comet Churyumov-Gerasimenko.
- 28 May 03 UCSC: Massive
tsunami sweeps Atlantic Coast in asteroid impact scenario.(NNN)
- 28 May 03 EPSL: A
case for a comet impact trigger for the Paleocene/Eocene (55My) thermal
maximum and carbon isotope excursion +
The Sturtian 'snowball' glaciation: fire and ice.
- 27 May 03 IAU Symposium, Sydney, 2003: Thursday July 17 -
7.00 pm -
Public forum with Dr Alan Harris from the Space Science Institute
Colorado, Dr Andrea Milani from the University of Pisa and Dr David
Morrison from the NASA Ames Research Center on "The Danger from
Space: Are Near Earth Objects a Catastrophe Waiting to Happen?" at
the Darling Harbour Convention Centre. Talk moderated by Karl
Kruszelnicki. + Australian
Minor Planet Workshop, Nelson Bay 25-27 July.
- 16 May 03 Spacedaily: A Fiery
About Volcanoes (source of hotspots)
- 14 May 03 SciAm: FOSSILIZED
METEORITES REVEAL SPECTACULAR ANCIENT SHOWERS OVER EARTH.
- 11 May 03 BBC: Japan
launches asteroid probe.
- 9 May 03 Astrobiology
(Journal) Vol3 No1: FREE viewing of the following:
- Bombardment of the
Hadean Earth: Wholesome or Deleterious? - Graham
- Spherule Beds 3.47-3.24 Billion Years Old in the Barberton
Greenstone Belt, South Africa: A Record of Large Meteorite Impacts and
Their Influence on Early Crustal and Biological Evolution -
Donald R. Lowe; Gary R. Byerly; Frank T. Kyte; Alexander
Shukolyukov; Frank Asaro; Alexandra Krull
- Petrographic Criteria for Recognizing Certain Types of
Impact Spherules in Well-Preserved Precambrian Successions -
Bruce M. Simonson
- Impact at the Permo-Triassic Boundary: A Critical
Evaluation - Douglas H. Erwin
- Fullerenes and Interplanetary Dust at the Permian-Triassic
Boundary - Robert J. Poreda; Luann Becker
- A Search for Soot from Global Wildfires in Central Pacific
Cretaceous-Tertiary Boundary and Other Extinction and Impact Horizon
Sediments - Wendy S. Wolbach; Susanna Widicus; Frank T. Kyte
- Chicxulub and Climate: Radiative Perturbations of
Gases - Elisabetta Pierazzo; Andrea N. Hahmann; Lisa C. Sloan
- Cenozoic Bolide Impacts and Biotic Change in North
American Mammals - John Alroy
- Environmental Consequences of Impact Cratering Events as a
Function of Ambient Conditions on Earth -
David A. Kring
- Comparing the Evidence Relevant to Impact and Flood Basalt
at Times of Major
Mass Extinctions -
- Large Aerial Bursts: An Important Class of Terrestrial
- John T. Wasson
- The Impact Crater as a Habitat: Effects of Impact
Processing of Target Materials - Charles S. Cockell; Gordon R. Osinski;
- Impacts and Evolution: Future Prospects - David Morrison
- Exchange of Meteorites (and Life?) Between Stellar Systems
- H. J. Melosh
- 9 May 03 Rice Uni: METEORITES
RAINED ON EARTH AFTER MASSIVE ASTEROID BREAKUP.(NNN)
- 8 May 03 Nature: Meteorites:
Catch a falling star.
- 6 May 03 ACA: Asteroid
impact puts heat on Snowball Earth theory of key evolutionary jump
- 6 May 03 CNN: Japan
probe to snag sample of asteroid.
- 2 May 03 Space.com:
'Shocking' Experiment Reveals How Asteroids Explode.
- 29 Apr 03 PSRD: Asteroidal
Lava Flows -- Meteorite studies indicate that we have pieces of
lava flows from at least five asteroids.
- 29 Apr 03: RAS/BAA
on Comets, Meteors and Meteorites, Saturday May 10, 10.30-17.30
Berrill Lecture Theatre, Open University, Milton Keynes.(CC)
- 29 Apr 03: The
2nd Release of the
Sloan Digital Sky Survey Moving Object Catalog (CC)
- 27 Apr 03 S&T: CHICAGO
- 27 Apr 03 SpaceDaily: Reaching For
- 17 Apr 03 Space.com: Short List of
Asteroids to Visit.
- 16 Apr 03 New Scientist: Print Edition 15 April 2003
ASTEROID SURVIVAL GUIDE:
- TAMING THE HEAVENS The public is only just beginning to
realise how devastating an asteroid impact would be. So what are we
doing about it? An expert in modelling planetary collisions takes a
critical look at our present precautions
- FIRES OF THE APOCALYPSE
The asteroid that wiped out the dinosaurs triggered such terrifying
infernos that it's a wonder life survived at all. Find out where to
hide if it happens again...
Nuking a giant rock
that's heading our way is not necessarily the best thing to do. It
might be far better to shine a light on it, wrap it in baking foil or
give it a lick of paint (not very effective - see Rocks in Space)
- 10 Apr 03
From Space + Reaching for
the Asteroids + A UK Flotilla
to Study Earth-Grazing Asteroids (CC)
- 10 Apr 03 Nature: Core from
asteroid crater fuels debate on what wiped out the dinosaurs. (CC)
- 10 Apr 03 Space.com: NASA
Needs New Vision for Human Spaceflight, Asteroid Protection,
- 9 Apr 03 Novosti: RUSSIAN
SCIENTISTS GO ON METEORITE-HUNTING EXPEDITION TO SIBERIAN TAIGA (CC)
- 5 Apr
03 : Nonracemic
isovaline in the Murchison meteorite: chiral
distribution and mineral association (abstract)
- 5 Apr 03 NASA: NEW
LAUNCH DATE FOR DEEP IMPACT.
- 5 Apr 03 Copenhagen Post : HOT ON THE
ASTEROID TRAIL (CC)
- 5 Apr 03 Discovery: MAINE
CRATER RELATED TO DINO-KILLER IMPACT?(CC) [but
age is uncertain]
- 5 Apr 03 Nature: Drilling to
cast light on climate change - Cores from
two African lakebeds [actually 2 cores from a lake formed by an impact
crater] will take researchers back in time. [It will be
interesting to see if there is evidence of recent
- 5 Apr 03 Space.com: New
Study: Some Asteroids are Like Onions.
- 5 Apr 03 ABC: HOT
ASTEROIDS MAKE EARTH-LIKE PLANETS MORE LIKELY.
- 5 Apr 03 Tumbling Stone: THE
RESULTS OF ESA'S CALL FOR PROPOSALS: "LET'S
CONTINUE STUDYING" + THE
OECD MEETING AND THE FUTURE OF THE EUROPEAN
NEO RESEARCH. (CC)
- 3 Apr 03 ESA: ESA
Studies Missions to Safeguard the Earth.(NNN)
Apr 03 OECD: Dealing with the hazard of asteroids
and comets that collide with the Earth - Report from the workshop,
entitled "Near Earth Objects: Risks, Policies and Actions" held in
Frascati, Italy, on January 20-22, 2003, It brought together leading
NEO experts and government officials to examine the NEO issue as it
relates to public safety. This is the one the Australian Science
Minister has been wating for.
- 2 Apr 03 Space.com: What
is a Moon? Definition Lags Behind Soaring Satellite Tally. See also
- 28 Mar 03 MSNBC: Meteor Chunks
In South Suburb, Light Up Night Sky.(thanks David Johnson)
- 27 Mar 03 PSS: The
statistics of flight opportunities to accessible near-Earth asteroids
- One of the objects involved, 1999 AO10, can be
rendezvoused with using a total velocity increment that is smaller than
that required to establish a lunar orbiter.
- 25 Mar 03 SpaceDaily: Rosetta To Play
Orbital Mechanics To Reach [comet] Churyumov-Gerasimenko + International
Crew Returns Home From Utah Mars Simulation Base.
- 19 Mar 03 CCNet: THE BULLET
THEORY: A NEW LINK BETWEEN MASS EXTINCTIONS AND ITS IMPLICATIONS FOR
HUMANKIND. [Impacts and
- 18 Mar 03 Discovery: Huge
Asteroid Impacts Predate Dinosaurs.
- 18 Mar 03 Uni Arizona: Worried
About Asteroid-Ocean Impacts? Don't Sweat The Small Stuff
[note there are many
good reasons for finding asteroids down 200m, even if
cause ocean-wide tsunami] (NN)
- 14 Mar 03 Space.com:
New Radar Maps Give Better View of Yucatan Crater
- 12 Mar 03 NYT: GIANT
IMPACTS - TITANIC VOLCANISM: BARRAGE OF METEORS MAY HAVE DOOMED THE
DINOSAURS (CC) See also Rocks
- 12 Mar 03 USA Today: MUCH
ADO ABOUT ASTEROIDS (CC)
- 11 Mar 03 Toronto Star:
TINY METEOROID MAY HAVE CAUSED COLUMBIA DISASTER (CC)
- 11 Mar 03 SpaceDaily: Simulations Of
Collisions Shed Light On The Internal Structure Of Asteroids
- 11 Mar 03 NAI: Great Impact
- 11 Mar 03 BBC: Dino
crater viewed from space + COMET CHASER
[Rosetta] HAS NEW QUARRY
- 11 Mar 03 S&T: LUNAR
FLASH DOESN'T PAN OUT. (CC)
- 5 Mar 03 CNRS: Simulations
Of Collisions Shed Light On The Internal Structure Of
- 4 Mar 03 NAI: Great Impact
Collision Course for Earth. + Space.com.
- 4 Mar 03 Space.com: Alleged
NASA Cover-up of Menacing 'NEAT' Comet Threat is Pure
Bunk, Experts Say
- 1 Mar 03 ABCNews: THE
TIME IS NOW: SOME ARGUE WE SHOULD WORRY ABOUT INCOMING ASTEROIDS.(CC)
- 1 Mar 03 Khaleeji Times : METEOR-LIKE
OBJECT SEEN IN SHARJAH (UNITED ARAB EMIRATES).(CC) - not a good
location for a fireball that might be confused with a missile.
- 1 Mar 03 Asteroid/Comet Connection: THE PURSUIT
OF 2003 CR20.(CC)
- 1 Mar 03 PSSRI: 10th
ESF IMPACT conference (updated URL)- BIOLOGICAL PROCESSES
ASSOCIATED WITH IMPACT - March 30th - April 1st, 2003, King's College,
Cambridge.(note the date change)
- 1 Mar 03 NASA: A
Rare Meteor Shower (best seen from Antarctica!) (NNN)
- 28 Feb 03 Space.com: Closing
in on Near Earth Objects.
- 27 Feb 03 Space.com: The
Impact Debate Part 3: Nagging Little Problems.
- 26 Feb 03 Uni Penns: Fossil Plant and
Insect Communities Key to Understanding Global Change (NNN)
- 26 Feb 03 Space.com: ASTEROIDS
AND SECRECY: IF END IS NIGH, DO YOU WANT TO KNOW?
- 25 Feb 03 LPSC2003 Abstracts (brief selection of PDFs):
- 24 Feb 03 NAI: Great Impact
The Large and the Small.
- 24 Feb 03 Nature (13/2): Long-lost
wave report sinks asteroid impact theory (see also CCNet)
- 24 Feb 03 Quick links (I have been away):
- 15 Feb 03 BBC: Sun's
close companion found - Astronomers have found the first object,
other than a planet, [asteroid] that circles the Sun
closer than the Earth.
- 15 Feb 03 Eurekalert: Los
Alamos researcher quantifies meteor false alarm rate
for nuclear test monitoring system (NNN)
- 15 Feb 03 UPI: Scientists
see no asteroid threat ... yet.(CC)
- 14 Feb 03 Space.com: Design
Defects May Have Doomed CONTOUR Spacecraft.
- 13 Feb 03 NAI: Murchison's Amino
Acids: Tainted Evidence? See also Rocks in
- 13 Feb 03 ESA: Surf
the Web to see the Sun-dancing comet.
- 13 Feb 03 BBC: 'Target
star wars system on asteroids'.
- 12 Feb 03: Planetary Defense
Conference: Protecting Earth from Asteroids, February 23-26, 2004,
- 11 Feb 03 NAI: Great Impact
I: Benefits of Hard Bodies (mass extinctions). Also at Space.com.
- 9 Feb 03 Guardian: THE
DAY THE SKY FELL IN: ASTEROID IMPACT AND THE FALL OF
ROME by Duncan Steel. ...Rome was not built in a day. That's
true. But it did come awfully close to being destroyed in seconds.
- 9 Feb 03 : Great
balls of fire, is that a UFO? [meteoroid fireball] (CC)
- 9 Feb 03 WP: NEOS
AND NUKES - editorial! (CC)
- 9 Feb 03: NATIONAL SECURITY
IMPLICATIONS OF THE ASTEROID THREAT (PDF, CC)
- 7 Feb 03 Space.com: Meteor
or Space Junk Strike Not Ruled Out in Columbia Investigation
(see also NS99: The
Right Stuff )
- 6 Feb 03 Nature: Disruption
of fragmented parent bodies as the origin of asteroid
- 6 Feb 03 LAT: NASA
Considering Space Hit - Investigators say Columbia may have
been struck by a meteorite or man-made debris while in orbit. See
and NS99: The
Right Stuff (CC)
- 6 Feb 03 Space.com: In
Defense of Earth: Keeping Asteroids at a Distance.
- 5 Feb 03 TPS-UK: DUCK AND
COVER ASTEROID SUNDAY - lecture last Sunday! (CC)
- 5 Feb 03 NOAO: NASA Should
Lead More Focused Program to Reduce Threat from Hazardous Asteroids.+
Report of the NASA Workshop on Scientific Requirements for Mitigation
of Hazardous Comets and Asteroids (NNN)
- 5 Feb 03 Insurance Day: ABDUCTION
OR ASTEROID: GETTING COVERED FOR THE PERILS FROM OUTER SPACE -
includes a report from the OECD Workshop (CC)
- 5 Feb 03 Space.com: How
Asteroids Trigger Volcanos - see also Rocks
- 3 Feb 03 SMH: Fridge
door terror kit a $15m 'waste' - (opinion) still
no sign of one cent for a Spaceguard project while the Australian
government wastes money keeping xenophobia on the boil.
- 1 Feb 03 NASA: Keeping an Eye on
Space Rocks.(Currently a banner on NASA's homepage!)
- 31 Jan 03 Telegraph: Is
this how life on Earth began? Faraday
Prize lecture by Paul Davies.(CC)
- 31 Jan 03 NatGeo: Comets:
How Big A Threat To Earth? (CC)
- 31 Jan 03 Pravda: A Broken
Network [Russian NEO detection] (CC)
- 29 Jan 03 Space.com: Internet
Astronomy: Watch on Web as Comet Kudo Zips around the Sun + What's
Next for the Rosetta Comet Mission?
- 28 Jan 03 TAMS: The Adelie Land
Meteorite - Lecture about Mawson's discovery of the first Antarctic
meteorite in 1913. Sydney 20 Mar 03.
- 28 Jan 03 BBC: AVERTING
ARMAGEDOON (transcript). This received skeptical reviews in
some UK newspapers. (CC)
- 28 Jan 03 Astrobiology Magazine: Early Mars: Oceans
Away? The surface of Mars is scarred by ancient river valleys,
apparently carved by liquid water. But was Mars warm and wet
continuously for millions of years - or only temporarily when massive
asteroids slammed into it? The likelihood of life on Mars may depend on
- 27 Jan 03 BBC: Experts
discuss asteroid defences (audio ram).
- 25 Jan 03 Uni Columbia: Researchers
Find Correlation Between Impacts and Increase in Volcanic Activity
- 25 Jan 03 PSRD: QUE 93148: A
the Mantle of Asteroid 4 Vesta?
- 25 Jan 03 SpaceDaily: Meteorite
Hints At Mars's Watery Past.
- 24 Jan 03 Tsunami Society: MEGA TSUNAMI HAZARDS
- We would like to halt the scaremongering from these unfounded
reports [that collapse of volcano flanks might cause ocean-wide "mega-tsunami"]
- 20 Jan 03 OECD: Workshop
on Near Earth Objects: Risks, Policies and Actions.
- 18 Jan 03 BBC TV: Horizon,
Thu 23 Jan, 21:00 - 21:50, BBC Two - Averting Armageddon: A look at the
struggle to find a way of stopping asteroids falling to Earth, using
spectacular graphics and interviews with some of the world's top
astronomers.(CC, thanks Duncan Steel)
- 15 MSNBC: Doomsday
revisited: How many of Earth’s five great extinctions were sparked by
asteroids or comets? (CC)
- 15 Jan 03 PSU: Dinosaurs
Experienced Climate Changes Before K-T Collision - "The
dinosaurs were well
- 14 Jan 03 S&T: DID
PLUTO TAKE A PUNCH?
- 11 Jan 03 International Meteor
Conference 2003 (CC/NNN)
- 11 Jan 03 EurekaAlert: Astronomers
poised to apply novel way to look for comets beyond Neptune
- 10 Jan 03 BBC: Dancing
- 10 Jan 03 SpaceDaily: First Neptune
Trojan Discovered + NASA Funds
Space Center With An Eye To Asteroid Sample Mission + Rosetta: A
To Solve Planetary Mysteries
- 9 Jan 03 NewSci: New
crater revives Moon mystery - did a small asteroid hit the Moon in
1953? Note that one event in a poisson
distribution does not indicate that "such impacts may be more
frequent than thought".
- 9 Jan 03 BBC: Kiss-and-chase
- 8 Jan 03 SpaceDaily: Near-Earth
Supernovas [well, 130 light years away].
- 8 Jan 03 BBC: Engine
glitch brought down rocket - cause of Rosetta launch delay.
- 4 Jan 03 Space.com: Moon-like
Asteroid to Make Close Earth Approach [JPL] + Terror
Fears May Affect Research Dollars.
- 31 Dec 02 ArianeSpace: Rosetta
Launch Is Delayed [a few days] (NNN)
- 30 Dec 02 BBC: Countdown
for voyage to comet (Rosetta) + science
- 18 Dec 02 New Sci: Hydrocarbon
bubbles discovered in meteorite.
- 18 Dec 02 Space.com: Newly
Spotted Comet Visible in Small Telescopes
- 18 Dec 02 AIAA (American Institute of Aeronautics and
Astronautics): AIAA’s 1st
Planetary Defense Conference: Protecting Earth from Asteroids.(NNN)
- 17 Dec 02 Space.com: EXPLODING
STARS: THREAT TO EARTH EXTREMELY REMOTE (CC) - for a
supernova to significantly deplete ozone it would have to occur within
26 light-years of our planet...this happens only about once in a
- 16 Dec 02 Space.com:
Lunar Crash of 1953: Impact Crater Identified. (NNN) + Geminid
Meteor Shower Underway, Peaks Saturday Morning.
- 13 Dec 02 Nature: Kuiper
- 13 Dec 02 New Scientist: Earth's
volcanism linked to meteorite impacts (see also this
Space item and 9 Dec EPSL below)
- 12 Dec 02 Science of Tsunami Hazards: Vol 21 No 2 - Dynamics
Cavity Generation [by asteroids] (see also Tsunami from a
balloon in a bathtub!) + Two and Three-Dimensional Simulations of
Asteroid Ocean Impacts (PDF downloads)
- 9 Dec 02 EPSL: Extraterrestrial
influences on mantle plume activity (abstract)
- 9 Dec 02 The Australian Magazine (30 Nov): GREAT BALLS OF
FIRE - excellent article by Mike Safe. Text version at
CCNet (about one third of the way down the page)
- 6 Dec 02 SciAm: Parched
Turf Battle - Did climate changes cause civilizations to collapse?
(full article for purchase!)
- 6 Dec 02 Science: Environmental
Effects of Large Impacts on Mars - Science 2002 298: 1977-1980.
- 6 Dec 02 JPL: Kuiper
Prize Going to JPL Pioneer in Radar Study of Asteroids.(congratulations
- 6 Dec 02 Space.com: Israel Space
Agency to Search for Threatening Asteroids.(Astronotes - pages
change day to day). Watch for Wise
- 4 Dec 02 Prospace: When
wishing upon a star wont do: The legal basis for ...(Spacegaurd)
paper by Evan Seamone - PDF
- 4 Dec 02: 95-TH
ANNIVERSARY OF THE TUNGUSKA EVENT (TUNGUSKA 2003) INTERNATIONAL
CONFERENCE (NNN) (URL may be down)
- 28 Nov 02 Newsday: ASTRONOMERS
ON ASTEROID PATROL + Ottawa Times: KEY
TO LIFE ON MARS MAY BE IN SUDBURY CRATER(CC)
- 26 Nov 02 SciAm: Satellites
Track Near-Earth Asteroid Explosions.
- 25 Nov 02 LANL: Laboratory
helps forecast frequency of giant meteors [sic]
- 23 Nov 02 How
much has the threat reduced?
- 22 Nov 02 ESA: Review
Board gives green light for Rosetta.(NNN)
- 22 Nov 02 Nature: Defence data
lower forecast for asteroids exploding in Earth's atmosphere + New
Scientist + BBC (CC)
- 22 Nov 02 SpaceNews: Prioritizing
The NEO Threat by Dana Rohrabacher, chairman of the
space and aeronautics subcommittee, of the House Science Committee
- 22 Nov 02 ASP: MOUNTAINS
OR MOLEHILLS: SIZING UP THE IMPACT HAZARD.(NNN)
- 21 Nov 02 ABC: Tunguska-type
impacts less common than thought.
- 21 Nov 02 University of Western Ontario: Satellite
study establishes frequency of megaton-sized asteroid impacts
+ AP: STUDY
DOWNPLAYS EARTH-ASTEROID PERIL + WP: KEEPING A
WARY EYE ON THE SKIES (CC).
Comment:I would have to question whether a 1 megaton event
would cause "serious regional damage". Using a formula provided in
Rogue Asteroids and Doomsday Comets, the area of devastation (trees
knocked over?) would be about 400 square km - the size of a small city.
That is probably a pessimistic estimate because the explosion would
occur at a higher altitude than the optimum for a nuclear weapon (on
which the formula is based). Of course the odds of such an explosion
occurring over land are about one third (ie average interval once every
300 years) and the odds of an explosion over a "populated" area maybe
about one tenth (once every 1000 years).
One of the simulations I carried out with John Lewis's
software gives an idea of the potential fatalities from small
impactors. The frequency will change due to the latest estimates of
small impactor numbers but the consequences can be gauged from the
NEOS 13 to 49m in DIAMETER
7% of events involved fatalities
Average of 10,000 fatalities per fatal event
Mean explosive yield 2.82Mt
In his book Lewis points out that, for this size range,
airbursts by stony asteroids are rarely a concern. Most of the serious
fatal events arise from impacts by iron meteoroids/asteroids that reach
the ground or shallow angle impacts that allow the object to
penetrate deep into the atmosphere before exploding.
Update 23 Nov: Just
how much has the threat of death from asteroids reduced due the new
The overall threat from all NEOs averages out at about 3000
(give or take a few thousand - due to the overwhelming influence of the
infrequent large events). The graph at
illustrates the dominance of the larger events over a 1
million year period.
In my 100,000 year simulation (at http://www4.tpg.com.au/users/horsts/sta1047.htm
the average annual fatalities from sub-50 metre impactors
works out at about 70. This might reduce to about 10 under the new
estimate of impact frequency for these small impactors prepared by
So the impact threat has fallen by about 60/3000=2%!
- 21 Nov 02 SpaceDaily: Leonid
Meteors Sparkle -- For Some.
- 20 Nov 02 Space.com: How
Life Might Have Formed in Martian Impact Craters + Dazzling
Display: The Leonid Meteor Shower Delivers on Promise.
- 15 Nov 02 TPS: The
Leonid Meteor Shower November 18-19, 2002.
- 15 Nov 02 THE
MCNAUGHT/ASHER PREDICTIONS FOR 2002 (PDF) (CC)
- 15 Nov 02 Space.com: 10
Little-Known Facts about the Leonids + Catch
a Shooting Star with Meteor Hunter, Dr. Peter Jenniskens
Releases Palm-OS Software to Count Leonid Meteors.
- 15 Nov 02 NASA: NASA
PREPARES FOR "LAST CHANCE" METEOR SHOWER. (NNN)
- 15 Nov 02 BBC: Impact
'showered debris over Britain' - from Manicouagan impact in
- 14 Nov 02 BBC: Mirror
matter mystery [on Eros] - [Dr Foot] calculates that
small objects containing mirror matter could have struck the asteroid
[Eros] and left behind precisely the same scars that are seen.
- 11 Nov 02 Science Mall USA: Impact crater
- 6 Nov 02 ESF: IMPACT
Workshop on Biological Processes in Impact Craters, University of
Cambridge, UK, 13-16 April 2003. The purpose of this Workshop
is to bring together scientists with an interest in the
evolutionary and biological significance of asteroid and comet impact
events with a special focus on biomogical recovery following impact
- 6 Nov 02 Space.com: Ghosts
of Impacts Past: Ancient Hidden Craters on Mars Revealed
First Pictures of Asteroid Annefrank Released + Comet
Collisions Help Generate Puzzling Cosmic Rays, Study Shows.
- 5 Nov 02 MACE 2003: Meeting on Asteroids and
Comets in Europe May 1-4, 2003, SPAIN.(NNN)
- 4 Nov 02 Florida Today: Sharing
intelligence key in jittery world (CC)
- 4 Nov 02 Birmingham News: Scientists
aim lasers at super tasks [asteroids] (CC) [caution
- nuisance pop-ups/java!]
- 4 Nov 02 SpaceDaily: Bacterial
Space - firing bacteria out of guns to test survival chances. (Transpermia).
- 4 Nov 02 Space.com: Global
& Local Forecasts for the 2002 Leonid Meteor Shower.
- don't get your hopes up - the Moon will be out!
- 4 Nov 02 NASA: Stardust
Successfully Flies By Asteroid Annefrank. BBC.
- 29 Oct 02 Uni Wash: Flyby
of Annefrank asteroid to help Stardust prepare for primary mission.(NNN)
- 29 Oct 02 Uni Illinois: Scientists
studying two big craters on earth find two causes.(NNN)
- 29 Oct 02 Novosti: Meteorite's
Location Found In Siberia.(NNN)
- 29 Oct 02 NASA: It's
Amateur Night in Space.(NNN)
- 25 Oct 02 Nature: Earth's lunar
attic (PDF copy) - see also 19 Oct. Icarus paper by Armstong
et al. Nature
- 24 Oct 02 ABC (Australian TV): Asteroid
Tsunami 8pm tonight - Australian scientist Ted Bryant says it’s
not the infrequent big space rocks we really should be concerned about
- it’s the smaller ones. Bryant takes Catalyst reporter Graham Philips
to the cliff tops of the coastline around Wollongong and finds
geological features that he claims were made by Tsunami’s that in turn
were caused by asteroid impact. Transcripts.
- 22 Oct 02 Space.com: Comet
[Borelly]'s Features Look a Lot Like Some on Earth.
- 22 Oct 02 BBC: Earth's Little
Brother Found (Asteroid 2002 AA29) (NNN)
- 22 Oct 02 NASA: NASA
Researchers Seek Astrobiology Insights on the Leonid Multi-Instrument
- 19 Oct 02 NASA: Earth
rocks on the Moon (See also transpermia
- 17 Oct 02 OECD
GSF: Workshop on Near Earth
Objects: Risks, Policies and Actions - Italy, January
20 - 22, 2003 (CC)
- 17 Oct 02 Solar System Expolorer: HAS HERMES
- 17 Oct 02 Space.com: NASA'S JOHN
MOON WILL SAVE US" (from NEOs)
- 17 Oct 02 Evening Standard: UNSEEN
ASTEROIDS COULD MAKE WAVES. (USCONGRESS MAY FORCE RELUCTANT NASA TO
EXPAND NEO SEARCHES) (CC)
- 17 Oct 02 JPL: Stardust
Will Fly By Asteroid Annefrank Next Month (NNN)
- 17 Oct 02 ESA: At
That Star, Turn Left! (NNN) - Rosetta mission will sample
a comet and, hopefully, determine the chirility (handedness) of
- 17 Oct 02 Space.com: DoD
Satellite Tracked Siberian Fireball that Might have Hit Earth.
- 13 Oct 02 SpaceDaily: Understanding The
Complexity Of Cometary Worlds - Comet Borelly and Deep Space 1.
- 13 Oct 02 S&T: THREATENING
ASTEROIDS: FEWER HITS IN OUR FUTURE? (note that there is
still considerable uncertainty about impact rates - this analysis
suggests Tunguska-like events occur, on average about every 1000
years rather than 100 years)
- 13 Oct 02 NASA: 2002
Leonid Meteor Storm Forecast (see our Leonids
- 13 Oct 02 UWO: US SATELLITES
CONFIRM SIBERIAN IMPACT (CC)
- 10 Oct 02 9News: Meteor
Denver, Wyoming and Utah (NNN)
- 7 Oct 02 Congressional
hearing on the NEO threat (links to html/PDF files) (CC):
- 7 Oct 02 Ananova: LARGE METEOR
(sic) MAY HAVE HIT NOTHERN RUSSIA (CC)
- 4 Oct 02 SpaceDaily: We Need More
Telescopes NEO Hunter Tells Congress + Earth In
Never Ending Game Of Cosmic Roulette With Asteroids.
- 4 Oct 02 Alert.net: Small
asteroid could be mistaken for nuclear blast - report on Reps
hearing. (thanks Steve Ward)
- 3 Oct 02 Spaceref: House Passes
Amateur Astronomy (NEO) Bill Honoring Astronaut Pete Conrad.
- 1 Oct 02 SciAm: Planetary
Protection - ways of deflecting rogue asteroids ("buy at "archive"!)
- 25 Sep 02 ESA: Avoiding the fate
of the dinosaurs (NNN) (Not yet live - try this link
- 25 Sep 02 Space.com: The
Search for the Missing Amazon Meteor. Iturralde
Crater Expedition. (CC)
- 25 Sep 02 Discovery: GENERAL
CALLS FOR METEOR WARNING SYSTEM (CC)
- 25 Sep 02 MSNBC: SCIENTISTS, GOVERNMENTS
STEP UP SURVEY OF NEAR EARTH OBJECTS (CC)
- 25 Sep 02 PopSci: CHICKEN
LITTLE OR PLANETARY SAVIOURS? (CC)
- 18 Sep 02 SciAm: What
are the odds of a dead dinosaur becoming fossilized? (the
bias in the fossilized record)
- 18 Sep 02 Space.com: Earth
Might Have Been a Ringed Planet, Like Saturn (due to an impact 35
million years ago) Also SpaceDaily.
- 13 Sep 02 SpaceDaily: Comets Break Up
Far And Near + Working Up
News Perspectives On Impact Threats.
- 13 Sep 02 Sandia NL: Rings
around the Earth: A clue to climate change? (NNN)
- 13 Sep 02 Space.com: Earth's
Newest Satellite Could Hit Moon Next Year. Also BBC.
- 10 Sep 02 Space.com: Experts: Slim
Hitting Earth But Vigilance Needed + LARGE
METEOR [sic] MAY HAVE STRUCK AUSTRALIA.
- 10 Sep 02 USAF: NEAR-EARTH
THREAT, GENERAL SAYS + Uni Cal: Science
Workshop Reveals Evolving Perspective on Asteroid Threat + S&T:
and Reporting Impact Risks (CC).
- 4 Sep 02 Uni Arizona: Earth
Suffered Pulses of Misery in Global Wildfires of 65 Million Years Ago.(NNN)
- 4 Sep 02 Conference underway: Workshop on
Scientific Requirements for Mitigation of Hazardous Comets and Asteroids
- huge range of NEO topics to be covered - see the program.
- 3 Sep 02 BBC: Dinosaurs
could not cope with climate change - BUT "the global
- 2 Sep 02 Workshop: Impacts:
a Geological and Astronomical Perspective, Prague, Czech Republic,
- 2 Sep 02 Geological Society: Cosmic
impacts and civilisation collapse (press release) + web site.(CC)
- 2 Sep 02 New Scientist: COSMIC
PILLOW FIGHT - Hermann Burchard of Oklahoma State University...
send spacecraft to fly alongside the threatening object and inflate a
giant bag some kilometres wide.
- 2 Sep 02 Florida Today: Space
rock debate rolls on - Earth defence (NNN)
- 23 Aug 02 Ninemsn: RESEARCHERS
DISMISS CLAIM THAT IMPACT CAUSED PERMIAN MASS EXTINCTION (CC)
- 23 Aug 02 Stanford Uni: Scientists
Confirm Age Of The Oldest Meteorite Collision On Earth (NNN/CC)
- 23 Aug 02 Space.com: Asteroid's
Close Pass Captured in Movie Form.
- 22 Aug 02 Discovery: Dino-Killer
Asteroid Triggered Huge Tsunamis (NNN & Steve Ward)
- 19 Aug 02 SpaceDaily: Beware Of
Buses From Deep Space.
- 16 Aug 02 Leicester Mercury: ROYAL
PAIR REACH THE FINAL FRONTIER - The Queen found out how to save
the world from a meteor collision from Leicester's space scientists...(CC)
- 16 Aug 02 Ananova: SCIENTISTS
BELIEVE DINOSAURS UNDER THREAT BEFORE ASTEROID STRUCK (CC)
- 16 Aug 02 BBC: 'READY TO
TACKLE ARMAGEDDON' (CC)
- 16 Aug 02 S&T: Flyby
of Asteroid 2002 NY40 - sky charts for observers in Europe, Africa,
and the Americas.(NNN)
- 16 Aug 02 NASA: Mission Operations
Awaiting Contact from CONTOUR Spacecraft - no signal after a
critical burn. (NNN)
- 14 Aug 02 Space.com: Newfound
Comet Visible in Binoculars. Sky
- 10 Aug 02 BBC: 'Ready to
(Proposed Spanish mission to knock an asteroid off course) (NNN)
- 10 Aug 02 Space.com: Viewer's
Guide: Perseid Meteor Shower Peaks Sunday & Monday.
- 7 Aug 02 Space.com: U.S. Military
Considers Coordinated Clearinghouse to Monitor and Respond to
Comet Threat (NNN)
- 6 Aug 02 Uni Arizona: Impact-Induced
Perturbations of Atmospheric Sulfur. Also Meteor
Crater and Tswaing
- 1 Aug 02 BBC: UK's first
impact crater discovered. Also Ananova
(NNN) + New
Scientist (with 3D image) + SMH
- researchers have pressed governments for a systematic survey of
skies for such hazards...From Nature: Impact
- 1 Aug 02 TPS: Winners
of the 2002 Shoemaker NEO Grants Announced (NNN)
- 31 Jul 02 NASA: Look at
that Asteroid - 2002 NY40 is faint now. It shines by reflected
sunlight ... As it nears Earth, however, the space rock will
brighten,soaring to 9th magnitude on August 18th.(NNN)
- 30 Jul 02 Space.com: NASA
Scientists Call British Media's Asteroid Hype Unethical Rubbish.
- 30 Jul 02 BBC: Asteroid to
this time around.
- 27 Jul 02 NASA: Caveat
Impactor. - NASA response to the recent "scare".
- 27 Jul 02 ABC: Space
laser could destroy Earth-shattering asteroid: scientist. (see also
- 27 Jul 02 Space.com: TRUE
TALLY OF ASTEROIDS PROBABLY AT HIGH END OF ESTIMATES.
- 25 Jul 02 CNN: Asteroid
May Hit Earth In 2019 But Don't Panic Yet + BBC: Space rock 'on
collision course' . CCNet reports.
Asteroid/Comet Connection first raised this matter.
- 25 Jul 02 Space.com: Astronomers
Monitoring Asteroid. + Evidence
for Ancient Bombardment of Earth.
- 23 Jul 02 Bioastronomy 2002 paper by Paine and Peiser: The Frequency and Consequences of Cosmic
the Demise of the Dinosaurs (280K PDF)
- 23 Jul 02 ABC: VOLCANOES
A BIGGER THREAT THAN COMETS (CC)
- 23 Jul 02 Space.com:
Scientists, Dreamers Continue Refining Ideas for Future Lunar Bases
(NEO detection and mitigation) (CC).
- 23 Jul 02 BBC: Rare space rock
(Tagish Lake) 'a gem'.
- 23 Jul 02 Space.com: Scientists
Debate Mystery Crater.
- 18 Jul 02 BBC: ASTEROIDS
'COULD TRIGGER NUCLEAR WAR' (CC)
- 18 Jul 02 SPACEFLIGHT NOW: NEO SEARCH EFFORTS
NEED MORE SUPPORT (CC) Also S&T.
18 Jul 02 SciAm: AVOIDING
AN ASTEROID IMPACT. + FOSSIL
FLORA SUGGEST RAIN FOREST ONCE FLOURISHED WHERE COLORADO NOW BURNS
(just 1.4My after Chicxulub).
- 18 Jul 02 SpaceDaily: THE NIGHT
FELL ON GEORGIA (CC)
- 18 Jul 02 (back from holiday!) Nature: Microphones tell
asteroids from A-bombs (my rough estimate is the annual risk of a
Tungunska-like airburst over a nuclear nation or sensitive region is
about 1 in 10,000). (NNN)
- 6 Jul 02 OSU: LATEST ICE
CORE MAY SOLVE MYSTERY OF ANCIENT VOLCANIC ERUPTIONS - this may
reveal climate data across the Australasian
Tektite event ~800Kya. (CC)
- 6 Jul 02 SOA: 2002 COMET AWARDS
- 6 Jul 02: The
Asteroid Threat: Identification and Mitigation Strategies - Space
Roundtable at the United
States Senate with several key NEO people. (CC)
- 3 Jul Space.com: Protecting
the Planet: SPACE.com Q&A with Asteroid Hunter David Morrison -
note that nobody is suggesting spending a billion dollars searching
for NEOs but tens of millions would be clearly cost effective. See also
Earth: Fact Vs. Fiction.
- 2 Jul 02 BBC: Space
probe to begin comet quest.
- 29 Jun 02 Armagh Observatory archives now available:
Comparable to NEOs + many more. (CC)
- 29 Jun 02 SpaceDaily: COMET MISSION
TO LAUNCH MONDAY, JULY 1 (now postponed to 3rd).
- 29 Jun 02 MSNBC: A SURPRISE AFTER THE
DINOSAURS' DOOM: EARTH BOUNCED BACK 'QUICKLY' AFTER K/T IMPACT. (CC)
- 28 Jun 02 The Guardian: CHASING
A COMET'S TAIL. (CC)
- 28 Jun 02 New NEO web page: Observatoire de la
Cote d'Azur, France.(CC)
- 28 Jun 02 ScienceMall (Ad): IMPACT CRATERS
ON EARTH - new poster for sale. Many resources.(CC)
- 27 Jun 02 CSM: Chilean
desert: new astronomy capital of the world - no, not Spaceguard -
- 25 Jun 02 NASA: Dealing with
the impact hazard. Revised appraisal of the impact hazard by key
scientits. 150K PDF download available.
- 21 Jun 02 BBC: Space
rock's close approach - 100m diameter asteroid passed within
km of the Earth. And if it had collided over Israel, India,
Space Centre PR. MSNBC: EARTH HAS CLOSE CALL
WITH AN ASTEROID - astronomers hope to beef up their
efforts, particularly in the Southern
- 21 Jun 02 SpaceDaily: Comet Explorer
On The Pad.
- 14 Jun 02 SWRI: SwRI
researchers identify asteroid breakup event in the main asteroid belt.(NNN).
- 12 Jun 02 BBC: Dino
heatwave recorded in leaves + New Scientist: Fossils
point to asteroid causing dinosaurs' demise.
- 8 Jun 02 S&T: Backyard
Search for Asteroids and Extrasolar Planets - An ingenious
arrangement of three homebuilt 14-inch telescopes on fixed mountings is
enabling Tucson-based amateur astronomer Roy Tucker
to conduct a backyard hunt for asteroids...and reach a
limiting magnitude of 20.5 - fainter than most professional asteroid
- 8 Jun 02: USGS Astrogeology
Research Program Website Launch.(NNN)
- 7 Jun 02 Space.com: FIRST
STRIKE OR ASTEROID IMPACT? (CC)
- 7 Jun 02 Toledo Blade: SCIENTISTS
STUDY DEFENDING EARTH AGAINST ASTEROIDS (CC)
- 7 Jun 02 Nature: FORGET NEO
IMPACTS: "VOLCANOES KILLED OFF PERMIAN SPECIES" (CC)
- 7 Jun 02 BBC: Volcanic
'flood' linked to [PT] extinction. Also Science
- 5 Jun 02 SpaceDaily: New Wave
Supercomputers Catch Big Waves (tsunami from asteroid impacts).
- 24 May 02 New Scientist: Supernova
"poised" to go off near Earth. 'But do not panic yet. "Very
could mean hundreds of millions of years in the future'
- 22 May 02 NearEarthObjects: ASTEROID
ARMAGEDDON DEBATE (CC)
- 18 May 02 Spaceguard
UK Newsletter: SOUTH AMERICA JOINS GLOBAL ASTEROID HUNT - The
establishment of Spaceguard South America has recently been announced.
Run by Dr Gonzalo
Tancredi of Montevideo University, Uruguay. + Follow-up letter from
Spaceguard UK to Australian Prime Minister "Perhaps Mr McGauran
does not insure his car,because he knows he will not have an accident
the next twelve months."..."Through ill-advice your Government has
itself into a corner, and Mr McGauran has made comments that
are easily shown to be false, and contradicted not only by scientists
but also by politicians elsewhere."
- 18 May 02: Response from Science Minister
- 18 May 02 Space.com: ASTEROID
IMPACT TIED TO RISE OF DINOSAURS.
- 18 May 02 The Guardian Online: Question to UK
MP Lembit Opik - What would you say to
Australian science minister Peter McGauran who describes the search for
near earth asteroids as a "fruitless, unnecessary, self-indulgent
exercise."?..."Peter McGauran is optimistic to the point of
ignoring the fossil record. You don't see many dinosaurs
living or voting in Austrialia? Why not? Because they took Mr
McGauran's view. The chances of an other impact which
could wipe out, say, 70% of life on earth, are 100%.
If the Austrialian Government knows better, they need to get into
fortune-telling, BIG TIME."
- 17 May 02 BBC: Mercury
meteorite puzzle + Impact
led to dino rule. Also New Scientist: Giant
dinosuars arrived with a bang.
- 15 May 02: Frequency of
fatal events analysis added to impact
- 14 May 02 National Geographic: RIO
CUARTO CRATERS [maybe] NOT CAUSED BY IMPACTS (CC)
- 14 May 02 New website: ASTEROID/COMET
- 3 May 02 Brunel Uni: ENVIRONMENTAL
CATASTROPHES AND RECOVERY IN THE HOLOCENE - Conference in London
from 29 Aug to 2 Sep.(CC)
- 2 May 02: New website: GaiaShield
- The Sky is Falling Now!
- 1 May 02 EPSL Abstract: Estimating
event rates in the presence of dating error with an application to
- 1 May 02 : Impact Tectonism
Workshop - Mora, Sweden, 31 May - 3 June 2002, (NNN)
- 1 May 02 Space.com: Pete
Conrad Act Tied to Threatening Asteroids.
- 25 Apr 02 Morning Call: Reinsurers
looking to worst as a result of Sept. 11 attacks Costs of meteors and
tidal waves are being calculated. (thanks Steve Ward)
- 24 Apr 02 ESA: Hypervelocity
Impact Symposium (HVIS) 2003 (NNN)
- 24 Apr 02 NYT: Abundance
of Cometlike Objects With Moons Stuns Experts + Nature.
- 22 Apr 02 SFC: Shooting
for the moon - Lunar surface may hold evidence that asteroids crashed
into Earth.- see also Transpermia.
- 20 Apr 02 CCNet selection: UK
ASTEROID CENTRE OPENS + CENTRE
TO "MONITOR" ASTEROIDS OPENS + DON'T
PANIC! ARMAGEDDON IS PROBABLY 878 YEARS AWAY
- 19 Apr 02 Nature: The
binary Kuiper-belt object 1998 WW31 (log-in) + ROCKS TWIRL IN
- 19 Apr 02 ESA: In
SOHO's pictures, watch a comet passing near the Sun.
- 19 Apr 02 SpaceDaily: ESA To Probe
Asteroid Blind Spot.
- 19 Apr 02 Space.com: Odd
Objects at Solar System's Edge Redefine Eccentricity.
- 19 Apr 02 The Scotman: OBSERVATORY
JOINS ASTEROID WATCH (CC)
- 12 Apr 02 Science: A
New Solar System Basalt (login req'd) - This meteorite clearly
originated from a partially molten object, but does not match the
of known basalts from the inner solar system. Of the inner
only Mercury cannot be ruled out as a possible source of this
- 12 Apr 02 The Guardian: A
last wave goodbye - An asteroid landing in the ocean would
produce the tsunami to end them all, says Duncan Steel. But see differences in estimates of tsunami from asteroid impacts.
- 12 Apr 02 Space.com: Social
Scientists Prepare for Asteroid Impacts: Any Intelligent Life Would
- I like the title!
- 12 Apr 02 BBC: Earth
rips space rocks asunder - When they get to close to the
Earth, our planet's gravity can rip asteroids apart.
- 12 Apr 02 Japan Today: Comet
discoverer Hyakutake dies at 51 (NNN)
- 10 Apr 02 AGU
Spring Meeting: An
Impact Centered Near Cameroon at the Time of the Permian Extinction
Caused the Fragmentation of Pangaea (CC)
- 10 Apr 02 NAI Abstracts: Impacts
and the Habitability of the Hadean Earth. + Environmental
Effects of large Impacts on Mars: Implications for River Formation.
- 6 Apr 02 ESA: New
Study Reveals Twice As Many Asteroids As Previously Believed + Space.com.
- 6 Apr 02 NASA: NASA
SPACECRAFT FINDS COMET HAS HOT, DRY SURFACE + Hitchhiker's
Guide to an Asteroid (NNN)
- 6 Apr 02 EDGE: Exploration at Big
(PDF) - data released from an exploration well drilled in Big
Clark County, Kansas confirm that the one- mile diameter circular
is a sinkhole and not a meteorite-impact crater. (thanks Richard
- 5 Apr 02 Science: (unfortunately a subscription is required
to view the full articles) Dodging
Asteroids + Celestial
Billiards Threaten Hit in 2880. NASA's David Morrison has pointed
out, in an informal email, that the fact that these are being
Science is something of an occasion in itself: papers about NEAs rarely
there, and 8 years ago Science rejected the original Chapman/Morrison
on the impact hazard without even submitting it to referees. SpaceDaily:
A Rock Headed Our Way. 6 Apr 02 Sydney Daily Telegraph: Asteroid
heading for Earth. SciAm.
- 5 Apr 02 TPS: The
Planetary Report Jan/Feb 2002 has an article (not online) by
technical editor James Burke and astronaut John Young that includes a
list of ten
actions that need to be taken in relation to space exploration and
survival. The list includes "Let's develop a real understanding of
resource potential of near Earth asteroids and of the hazard from
and comet impacts on Earth".
- 5 Apr 02 BBC: Asteroid
could hit Earth in 2880. - A space rock one kilometre wide
[currently] has a one in 300 chance of colliding with our planet. JPL Press Release
(pending) and characteristics
of asteroid 1950 DA (NNN). Also from BBC: Comet
Borrelly close up.
- 5 Apr 02 Uni Arizona:
Tweak Temperatures of Smaller Asteroids To Deflect Them From Earth, UA
Scientist Suggests (NNN).
- 5 Apr 02 GSA: Impact Events'
Kinetic Energy May Be Key to Understanding the Severity of Mass
- 5 Apr 02 NASA: NASA
Dryden, Southwest Research Institute Search For Vulcanoids (not Mr
Spock but asteroids
that orbit the Sun near Venus) (NNN) Also SpaceDaily.
- 4 Apr 02 Space.com: Second
New Comet May Be Visible in Late April + A
Homeland Defense for Planet Earth. (see also Defending
- 1 Apr 02 SciAm: WATCH
THE SKIES? At a recent interdisciplinary meeting on the campus
of Pangaea University, researchers discussed with some alarm the
mounting evidence that each of the known mass extinction events may
have been caused by a titanic collision of a comet or asteroid with the
earth...the impact could ignite a gigantic firestorm. It might destroy
every last trace of our magnificent papier-mâché
cities...a big collision like this might not occur for tens of millions
of years. That's more than enough time for us to get it done. Right now
we'd be better off putting our science funding to more worthwhile
- 31 Mar 02 Nature: Two cheers for
extinction + Determinants
of extinction in the fossil record.[but see Rough
Guide to Impact Frequency and Impacts and mass
- 30 Mar 02 Guardian: Hole
of the moon - why did so many immense collisions all occur at
around the same time and why did impacts of such massive size not
- 27 Mar 02 Space.com: Why
We Fear Ourselves More than Asteroids.(CC)
- 27 Mar 02: NASA: WORKSHOP ON SCIENTIFIC
REQUIREMENTS FOR MITIGATION OF HAZARDOUS COMETS AND ASTEROIDS (NNN)
- 27 Mar 02 National Post: SENTRY
FROM OUTER SPACE (CC).
- 27 Mar 02 Honolulu Advertiser: ASTEROID
THEORY EXPLORES IMPACT ON EARTH LIFE (CC)
- 26 Mar 02: Preprint of article for the Science of Tsunami Hazards 'Tsunami
book gives a better understanding of ancient floods on Mars' (800K
PDF). Vol 20 No 1 (2002).
- 25 Mar 02 SpaceDaily: [Natural disasters on] Earth Kills
250,000 People A Year + Bright Comet
Graces Northern Sky.
- 23 Mar 02 S&T: COMET
IKEYA-ZHANG AT ITS BRIGHTEST?
- 21 Mar 02 Canberra Times: Astronomers
left to watch this space (negative, but unsubstantiated, comments
60 Minutes issue). (CC)
- 21 Mar 02 Space.com: AUSTRALIAN
OFFICIAL: SEARCH FOR DEADLY ASTEROIDS 'FRUITLESS, UNNECESSARY' + Asteroid
Buzzes Earth, Highlighting Cosmic Blind Spot (CC)
- 17 Mar 02 Australian Ch7 TV: Deeper
Impact - transcripts of Sunday Sunrise critical of government
- 17 Mar 02 Yahoo: Amateur
Astronomer Sights New Comet.
- 16 Mar 02 New Scientist: Asteroid
buzzes Earth from "Blind Spot".
- 15 Mar 02 Press Release: Newly
discovered asteroid warrants "careful monitoring".
- 15 Mar 02 Space.com: NASA's
New Asteroid Sentry Stands Watch.
- 14 Mar 02: The Australian 60 Minutes
will have segment about asteorid impacts during the show on Sunday 17th
There will be an online forum after the show. [forget about accessing
60 Minutes website if you have Netscape - this appears to be a Netscape
site!]. Channel 7's Sunday Sunrise
(8am) will also cover this issue.
- 13 Mar 02 TPS: Deadline
Approaches for Next Round of Shoemaker NEO Grants (NNN)
- 13 Mar 02 JPL: SENTRY
- An Automatic Near-Earth Asteroid Collision Monitoring System.
- 9 Mar 02 SpaceDaily: Rosetta Team
To Comet Wirtanen + Comet
"Ikeya-Zhang" Returns 341 Years Later.
- 9 Mar 02 Space.com: Viewer's
Guide to New Comet Ikeya-Zhang.
- 2 Mar 02 PSRD: Searching
Antarctic Ice for Meteorites + The Composition of
Asteroid 433 Eros.
- 2 Mar 02 UA: UA
Researcher Says Cataclysm That Resurfaced the Earth and The Inner
System 3.9 Billion Years Ago Was Caused By Asteroids, Not Comets
- 22 Feb 02 ABC (Dr Karl): Tibet
Cooled The World - 50 million years ago when India collided
with Asia at the
frightening speed of 20 centimetres per year...
- 22 Feb 02 UA: GEOLOGISTS
WEARY, BUT ELATED BY CHICXULUB DRILLING OPERATIONS (NNN)
- 22 Feb 02 CCNet: How many
near-misses (within the distance to the Moon) are there? See Duncan
Steel's notes (item 11).
- 20 Feb 02 Space.com: Newly
Spotted Comet Will Soon Grace Night Skies.
- 19 Feb 02 SciAm: Study Suggests
out Marine Life Two Million Years Ago. [note the Eltanin
ocean impact 2.15 million years ago would have caused similar
- 19 Feb 02 Kirsch Foundation: EARTH
THREATENING COMETS AND ASTEROIDS - WHAT NEEDS TO BE DONE? + NEAR
(CC) - Steve Kirsch: If we don't get hit, Senators and
Representatives will be criticized for wasting taxpayers' money. And if
we do get hit, it won't matter since we'll all probably be dead. So
politically, it's a stupid decision to vote for this since you can't
win either way.
[In fact there is roughly a 1
in 150 chance of a ten-year Spaceguard project detecting a Near Earth
ASTEROID that will impact within 50 years and a 1 in 10 chance of a
serious (50m+ object) actually hitting us during those ten years so the
politicians odds during a 10 year search are:
Steve Kirsch probably has a good point about the politician's gamble.
The odds of a civilisation destroyer are, thankfully much lower -
about 1 in 2000 during 50 years - but it is the grave consequences of
impact that makes these objects worth looking for.]
- No hit during 10 years: 90%
- Hit without warning during the ten year search: 10% (most
probably a Tunguska size impact - with a 10% risk of a populated region
being hit -
ie roughly a 1% risk of a serious multiple fatality
- Discovered by Spaceguard prior to a hit within the next 50
- 18 Feb 02 WP:
of Ages - this journalist has got the message!
- 16 Feb 02 Space.com: SPACE-BASED
MISSILE DEFENSE NEEDED TO THWART ASTEROID ATTACKS (but see Defending
Earth: Fact Vs Fiction and this CCNet Special).
- 12 Feb 02 AAS: NEAR-EARTH
OBJECTS: DISCOVERY, TRACKING, AND CHARACTERIZATION - Word doc by
- 10 Feb 02 The Age: Searching
for space rocks on the 9.05 (published 28/1/02).
- 8 Feb 02 NASA: Progress in
the Spaceguard Survey (revised URL) - We have now found 587 of
the larger (1 km) NEAs. Will we make the goal of 90% completeness by
2008? ...It is particularly
notable how much LINEAR's discovery rate picked up in the second half
the year...We may be still a little shy of the mark for 90% completion
the end of 2008, but not seriously so for the nominal population
1000. If there are as many as 1200, then we will have to go deeper
(perhaps beyond magnitude V=20) to reach the goal in 2008. Or we would
need to increase sky coverage, for example by adding a telescope at
a Southern Hemisphere site...[note also the UK Task Force
recommendation that we should be looking for NEAs as small as 300m.
Also uncertain when "diminishing returns" will cut in.].
- 8 Feb 02 Spaceflight Now: PETE
FOR (discovering) NEAR-EARTH OBJECTS. (CC/NNN)
- 8 Feb 02 The Guardian:
COMETS GET A SNOWBALL'S CHANCE (CC)
- 5 Feb 02 Canberra Times: Australia
fails world on asteroids: scientists.
- 2 Feb 02 Space.com World's
Asteroid Hunters Make Political Plea to Save Earth.
- 1 Feb 02: In a remarkable show of global solidarity more
scientists from 17 countries have signed a letter to Australian Prime
John Howard, calling for a major Australian contribution to Spaceguard
the international effort to detect asteroids that might collide with
Earth. The signatories to the letter come from Australia, Canary
Croatia, Czech Republic, Denmark, Germany, Greece, Israel, Italy,
Poland, Romania, Russia, Spain, Sweden, Ukraine, United Kingdom
United States of America. They include leading asteroid researchers
as David Levy and Caroline Shoemaker - famous for discovering Comet
Shoemaker Levy 9 that collided with Jupiter in 1994. The letter was
organised by Jay Tate from the Spaceguard Centre in the UK and Dr Benny
Peiser from Liverpool John Moores University, UK. Michael Paine from
the Planetary Society Australian Volunteers assisted them. A PDF copy
of the letter and press release can be
viewed at http://www4.tpg.com.au/users/tps-seti/pr_oz_sg.pdf.
- 29 Jan 02 NASA Science News: The
Great Dying 250 Million Years Ago - telltale signs of a
between our planet and an asteroid 6 to 12 km across...it's wise to
the suspects -- an ongoing process -- before it happens again.
- 24 Jan 02 BBC: SCIENTISTS
HUNT FOR ASTEROIDS - ...The search for comets and asteroids is
stepping up. So far, it is centred in the USA, though teams in Japan
are setting up
information centres and may adapt telescopes in the Canary
Islands to join the search. But a telescope powerful enough to
see a small
asteroid can only search a small strip of sky at a time and at present
one is searching in the southern hemisphere. This worries Dr Duncan
who used to run a search programme in Australia. "A third of the sky is
not being searched because there is no Southern Hemisphere search
he warns. "In essence, at the current time, our back door is open
no one is looking down there." (CC)
- 24 Jan 02 GSA: The K-T Impact
Extinctions: Dust Didn't Do It (NNN) - maybe not, but dust is
one of many environmental consequences of an
impact - see also Did
Asteroid-Induced Firestorm Destroy the Dinosaurs?
- 19 Jan 02 CCNet (18 Jan): THE REAL
SITUATION INVOLVING 2001 YB5 - excellent report by Brian Marsden
from MPC. The real role of the search programs is therefore
in attempting to secure the safety of future generations. If it
does happen that we are tremendously unlucky and experience an
unanticipated asteroidal impact, we should therefore blame
past generations for not embarking on an adequate search.
- 19 Jan 02 UniSci: Drilling To Begin
Linked To Mass Extinction. Cross-section
- 19 Jan 02 Uni Arizona: Interactive
global map of impact craters. Australia.
- 18 Jan 02 CNN: Asteroids
duo zips by planet (UT) - The first was up to 3km across and
passed 11 million kilometers away from the Earth (about 24 times the
distance from the Earth to the Moon). The second was only 100 metres
across, but came within 3 million kilometres of us. NASA list of close approaches by
- 16 Jan 02 Space.com: America's
Most Powerful (current) Rocket Set for Launch Today - might be
useful for chasing
- 15 Jan 02 The Vancouver Province: ON
GUARD FOR ARMAGEDDON (Funding of Spaceguard Canada withdrawn!) +
Montreal Gazette WELCOME
TO LEVY'S NIGHTMARE (CC)
- 15 Jan 02 Florida Today: Astronomers
Survey Sky For Big Asteroids + Response
to asteroid threat depends on its geology (NNN)
- 13 Jan 02 The Age: Planet
X - plug for Spaceguard by Paul Davies. It would be the supreme
irony if on the rare planet that permitted life to evolve as far as
intelligence, the resulting beings were still too stupid to protect
their species from
cosmic catastrophe + A
BLIND SPOT OF COSMIC PROPORTIONS.
- 13 Jan 02 Uni Tennessee: UT Geologist
Helps NASA Explore Giant Asteroids (CC)
- 10 Jan 02 SMH: Looking
out for the mother of all comets - It's time for Australia to
back in the hunt for the asteroid that could wipe out life on
writes Paul Davies. Also The Age: Big
bang that ends it all and MONSTER
FROM OUTER SPACE JUST MISSED US (the Earth, not the USA!)
- 8 Jan 02 Space.com: New
European Centers to Monitor Asteroid Threat
- 8 Jan 02 BBC: Space
rock hurtles past Earth - 300m asteroid, less than 1 million km
Earth (the Earth travels about 2.5 million km around the Sun each day).
Discovered just a few weeks before! Note that an ocean impact is unlikely to pose a serious
threat for coastlines more than about 300km from the impact. Also Sydney
- 8 Jan 02 NASA: Comet
96P/Machholz Now Visible In SOHO Images + Ceres:
A Texas-Sized Space Rock + Popular Mechanics: Leonids
Cause Visible Lunar Explosions + IAU CHANGES GUIDELINES FOR
- 2 Jan 02 The Guardian: INFORMATION
CENTRE IS RESPONSE TO THREAT FROM ASTEROIDS (CC) - "A
desperate need for the global Spaceguard project is southern
hemisphere coverage: half the sky is uncovered at present. The
task force report highlighted this," said Duncan Steel, a physicist at
Salford University. "And yet the UK has recently announced its withdrawal
from the Anglo-Australian Observatory. Between 1990 and 1996, I
- NEO search programme ever to use British
based at the Anglo-Australian Observatory - but it was funded entirely
the Australian government."
- 27 Dec 01: On 1 January 2002 the Comet and Asteroid
Information Network (CAIN) will become active. Co-ordinated by
the Spaceguard Centre
- 27 Dec 01 Space.com: Kevlar
vs. Comets: Bullet-Proof Craft to Get Closest Comet Views Ever.
- 22 Dec 01 Space.com: NASA
Trims Arecibo Budget, Says Other Organizations Should
Support Asteroid Watch. More
- 22 Dec 01 New Website:
- 21 Dec 01 Space.com: Funding
for Arecibo Telescope Cut, Restored The large Arecibo dish is
used to characterize the surface properties and shapes of
asteroids having orbits that bring them close to
Earth (radar - see previous item).+ TPS
press release. (NNN) + Life
is Sweet: Sugar-Packing Asteroids May Have Seeded Life on Earth.
- 20 Dec 01 NASA: ASTEROID 1998 WT24
[radar]IMAGES - this giant potato whizzed Earth by last weekend.
- 20 Dec 01 Denver Post: Meteor
from asteroid belt - Colorado sleuths track August fireball.(NNN)
- 20 Dec 01 Wired News: ONE
ASTEROID CAN RUIN YOUR DAY - Brian Marsden "One of these days
we'll get another Tunguska, and then people will think about putting
some money into this" + The Independent: THEY
COME FROM OUTER SPACE + HYPERVELOCITY
IMPACT SYMPOSIUM - The Netherlands, April 2003 (CC)
- 18 Dec 01 Nature: Deep Space 1
reveals Borrelly's dark secrets.
- 18 Dec 01 Space.com: Comet
Orbiter and Lander Mate, Will Run Hot and Cold Tests.
- 17 Dec 01 Stanford Uni: Geophysicist
studies life in the early solar system - Norman Sleep discusses transpermia as a possible mechanism for
surviving asteroid bombardment. Presented at AGU.
- 15 Dec 01 NASA: Asteroid
1998 WT24 - A big and bright near-Earth asteroid will glide by
our planet on Dec. 16th within easy range of powerful radars and
backyard telescopes. See also SpaceWeather.
- 14 Dec 01 Space.com: Moon
Base Would Scan The Sky, And Deflect Threats To Earth.
- 13 Dec 01 Internet Geology: Ring Structure
in Basement of South Tatar arch - Super-giant Romashkino oil
field and other fields occur on a gigantic ring structure in the
basement rocks. This feature, the Shentalinsko-Cheremshan structure,
has a diameter of 250 km and
is expressed clearly in the gravity and magnetic fields in the form of
ring distribution of anomalies...Development of the
Shentalinsko-Cheremshan ring structure began with formation of an
isometric arch in the Earth's
crust due to introduction of mantle material. [that is, it is not
to be due to an impact but it provides an interesting example of the potential for ringed structures to trap oil].
- 12 Dec 01 UT: Comet
Hunter - Carolyn Shoemaker
- 12 Dec 01 NYT: Observatory
Calls Budget Plan a Threat to Survival - "The (Bush)
administration believes the science foundation has a superior system
for subjecting research proposals to competitive reviews based on merit
before financing them. Astronomers and Smithsonian officials counter
that the initiative betrays a deep misunderstanding of how the
observatory operates and say that wrenching away its independence could
effectively destroy a system that has fostered major
discoveries." Although, I understand, the observatory
concerned is not directly involved, This will inevitably affect the
Spaceguard program, if only because of competition for funds. An
uncanny reminder of the situation in Australia in
1996, when John Howard came to power.
- 8 Dec 01 AGU annual meeting: NEO
- 8 Dec 01 SpaceDaily: Japan's
'Spaceguard' Centre To Track Celestial Clutter (NNN)
- 5 Dec 01 TPS: Planetary
Society Now Accepting Applications for the next round of
- 1 Dec 01 NASA: Explosions
on the Moon + Ocean
Inside Jupiter's Moon Callisto May Have Cushioned Big Impact.
- 1 Dec 01 Space.com: Comet
Borrelly Puzzle: Darkest Object in the Solar System.
- 30 Nov 01 from CCNet: SciAm: NEW STUDIES SHARPEN
PICTURE OF NEAR-EARTH ASTEROIDS + Space.com: LEONID
METEOR SHOWER FORECASTS: 'IT LOOKS LIKE WE WERE ALL WRONG' + ESA SCIENTISTS CAPTURE
THE LION'S OFFSPRING DOWN UNDER
- 27 Nov 01 Space.com: WHEN
SPACE ROCKS COLLIDE: VIOLENT CREATION OF ASTEROID FAMILIES + NASA: Listening
to Leonids + Baltimore Sun: Computers
and digitized optics have discoveries occurring faster than they can be
agreed upon (CC)
- 25 Nov 01 BBC: Dino
asteroid led to 'global devastation' + Institute of
Geological & Nuclear Sciences, New Zealand - it is no
longer difficult to explain the mass extinction of large herbivorous
dinosaurs and their predatory cousins, especially in the southern
hemisphere. Not surprising - see Environmental
effects of impacts.
- 24 Nov 01 Space.com: Violent
Creation of Asteroid Families.
- 24 Nov 01 SWRI: Sunlight May
Nudge Asteroids Toward Earth. (NNN)
- 22 Nov 01 Conference annoucement: ENVIRONMENTAL
CATASTROPHES AND RECOVERY IN THE HOLOCENE, Brunel University,
London, U.K. 29th August-2nd September 2002. Contact CCNet moderator DR Benny Peiser if you are
interested in a session on microplanet impacts.
- 22 Nov 01 ESA
scientists listen to the Leonids, JPL
Tool For First Comet Orbiter Will Examine Escaping Gases, Space.com: A
Grand Diversion: The 2001 Leonid Meteor Shower in Words & Pictures.
- 17 Nov 01 WITS: POSSIBLE
CRATER DISCOVERY IN IRAQ (CC - see 6 Nov)
- 17 Nov 01 Astronomy.com: More
Asteroids Pair Up (NNN)
- 16 Nov 01: Ananova: 'DIVINE
INTERVENTION': ATMOSPHERIC IMPACT OVER SCOTLAND RATTLES IGNORANT EU
SCIENCE MINISTERS + ESA (CCNet headline): SPACE
POLICY NOT SERVING CITIZENS AS EU SCIENCE MINISTERS CONTINUE TO IGNORE
IMPACT HAZARD - MODERATOR'S NOTE:
Regrettably, the meeting's programme does not include any
discussion of Europe's notorious indifference
towards international NEO search efforts or the UK Task Force Report on
long as this ignorance continues, the EU's resolution entitled "Space
European citizens" will remain little more than spin on an abysmal
of political leadership. But then what else should one expect of
lack of vision and paralysing bureaucracy? BJP + National
BAY CRATER OFFERS CLUES TO ANCIENT CATACLYSM +
- 15 Nov 01
Space Exploration - Looking for Planetary Paydirt. See also Riches
Rubble... + Fire
in the Sky: Stormy Past of the Leonid Meteor Shower.
- 15 Nov 01 The Scotsman: Boom
towns rocked by quake scare (early Leonid?) + NASA: Across
the globe and around the clock, NASA engineers to track and share
Leonids data. (NNN)
- 14 Nov 01 Space.com: Comets,
Meteors & Myth: New Evidence for Toppled Civilizations and Biblical
- 14 Nov 01 Spaceguard
UK: ASTEROID HAZARD NOT REDUCED.
- 14 Nov 01 SpaceDaily: COMET BORRELLY:
THE DATA SO FAR.
- 13 Nov 01 Sunday Telegraph - NASA
BATTENS DOWN HATCHES FOR METEORS, YOWUSA: ASTRONOMERS
FEAR MIDDLE EAST IMPACT EVENT COULD PRECIPITATE NUCLEAR EXCHANGE ,
- 10 Nov 01 Tumbling Stone: ASTEROID
DEFLECTION: WE ONLY NEED A LITTLE, GENTLE KICK... + EARTH-IMPACTOR
MITIGATION METHODS (CC). See also Defending
Earth: Fact Vs Fiction
- 9 Nov 01 NASA SN: JAW-DROPPING
LEONIDS + Space.com: MILITARY
SATELLITES BRACE FOR LEONID METEOR SHOWER (CC)
- 9 Nov 01 GSA: Crater
Makes an Impact on Three Sessions at GSA + GOSH!
SPECIES MORE LIKELY TO SURVIVE AFTER MASS EXTINCTION EVENT THAN BEFORE
MEGA-FAUNA MASS EXTINCTION: YOUNGER DRYAS 'NO UNIQUE CLIMATE EVENT'.
- 8 Nov 01 PSRD: Serving Up
Meteorites on Ice - Antarctica discoveries
- 8 Nov 01 Space.com: Earth
Orbiting Satellites Brace for Leonid Meteor Shower.
- 8 Nov 01 Eurekalert: Sky
survey lowers estimate of asteroid impact risk (NNN) - note that the "main belt" asteroid population is one
ways to estimate the local NEO population. Update: Space.com.
- 7 Nov 01 Space.com: Leonid
Meteor Storm! When, Where and How to Watch. (NNN)
- 7 Nov 01: NEAR
EARTH OBJECTS: AN OPPORTUNITY FOR ALL UK ASTRONOMY AND SPACE SCIENCE -
Discussion Meeting, to be held at the Geological Society on
Piccadilly (UK!) on Friday December 14th.
- 7 Nov 01 SpaceDaily: LEONID METEOR SHOWER
COULD BE ONE OF BEST IN HISTORY.(CC)
- 7 Nov 01: SUBARU
APPROACHES ORIGIN OF COMETS (NNN)
- 6 Nov 01 (UK) Sunday Telegraph: METEOR
CLUE TO END OF MIDDLE EAST CIVILISATIONS. More at CCNet. Note
that, by itself, a 150m asteroid causing a 3.4km crater is unlikely to
have led to the collapse of several civilisations.
- 3 Nov 01 CCNet: SUPPORT THE
MINOR PLANET CENTER! - The MPC is at a breaking point...there
is now a real threat that the MPC will have to cut back its services if
serious financial support is not soon forthcoming. MPC Circular.
- 3 Nov 01 Wired News: COMING
SOON: SPECTACULAR METEORS (CC)
- 2 Nov 01 SwRI News: Observations
On The Surface Of Asteroid Ceres (NNN)
- 31 Oct 01 BBC: Mystery
space blast 'solved' - Tunguska. Also Space.com.
Note that it is entirely possible that an "airburst" of an object
colliding with the atmosphere at perhaps 60km/s (ie the Taurid stream)
it to totally vaporize and that no "chunks" fall to the ground - see
Lewis's book "Comet and Asteroid Impact Hazards".
- 30 Oct 01 Guardian: Invaders
that rock the world - Are we really descendants of bacteria that
rode on cosmic cannon balls, asks Matthew Genge.
- 30 Oct 01 Ananova: SCIENTIST
URGES GOVERNMENT TO HELP AVERT NATURAL DISASTERS - member of UK NEO
Task Force, Sir Crispin Tickell (CC)
- 30 Oct 01 Space.com: The
2001 (Leonids) Storm: How It Compares to History - updated story
with info and links.
- 26 Oct 01 Space.com: Bright
Comet Spotted Streaking Toward Sun.
- 24 Oct 01: Space
2002, to be held in Albuquerque in March 2002, will
cover the topics of
(Tip off from Mark Sonter)
- Asteroid / Comet Impact Threat Assessment
- Asteroid / Comet Mitigation Studies (either by deflection
or by mitigation of consequences of impact)
- Asteroid / Comet Resources Studies
- 20 Oct 01 Space.com: Asteroid
Discoveries May Outpace Ability to Assess Threat to Earth. Please
note that I consider it very unlikely that a 100m asteroid would cause
a tsunami threat - it would probably take
one at least
1km in diameter to cause a severe ocean-wide tsunami.
- 20 Oct 01 CCNet items: Calgary Sun: ASTEROID
WITNESSES SOUGHT + EXPERTS
SEARCH FOR ASTEROID + Vancouver Sun: POLICE
CALLED FOLLOWING ASTEROID CRASH + The Guardian: Space
drifters + The Budapest Sun: HUNGARIAN
HAS DINOSAUR 'WOBBLE' THEORY
(not sure why a mechanism for dislodging an asteroid from the asteroid
belt is needed - random chance suggests a K-T size impact every 100
million years or so!)
- 19 Oct 01 NASA: Orionid
Meteor Shower Begins on Sunday (UT)
- 18 Oct 01 The West Australian: Meteor
lights up night sky (NNN)
- 18 Oct 01 Space.com: STEPHEN
HAWKING'S DOOSMDAY PREDICTION CALLED 'REGRETTABLE HYPE' + HAWKING'S
HYSTERIA (CC) + BBC: Scientists
criticise Hawking 'hype' - Sir Arthur C Clarke told BBC News
Online: "I am surprised Professor Hawking didn't mention the danger of an asteroid impact which is
or later. Admittedly, this is most unlikely to wipe out the human race,
it could send us back to the Stone Age.".
- 18 Oct 01 Inscight: A
600-KILOMETER SPACE POTATO + Discovery: BLAST FROM THE PAST
+ University of Pennsylvania:CELESTIAL
CATASTROPHES IN HUMAN PREHISTORY + Working
an International Approach to Detecting Earth-Threatening Asteroids and
and Responding to the Threat They Pose (CC)
- 16 Oct 01 Calgary Sun: Fireball
Seen In Canadian Sky (NNN)
- 12 Oct 01 SpaceDaily: LEONID METEORS
LIKELY TO STORM THIS NOVEMBER (CC)
- 9 Oct 01 GSA Abstracts
Nov 2001 Conference: IMPACT-INDUCED
VOLCANISM: A GEOLOGIC MYTH - more scepticism by Jay Melosh (CC) More
- 9 Oct 01 Times: METEOR
STORM 'WILL BE WORST SINCE 1966'.
- 2 Oct 01 CCNet items - The Times: ASTEROIDS?
WHAT ASTEROIDS? (concerns about response to UK Task Force report),
Florida Today: NASA
PREPARING FOR BIGGEST METEOR STORM IN 35 YEARS, NearEarth.net: BORRELLY, THE UNIVERSE & EVERYTHING,
ASIAN TOOLS SHOW EARLY HUMAN TOLERANCE OF VARIABLE CLIMATE.
- 2 Oct 01 Goodricke-Pigott
Observatory in Arizona: Spaceguard for amateur astronomers.
- 30 Sep 01 BBC: SPACEGUARD
UK OPENS OBSERVATORY (CC)
- 28 Sep 01 Space.com: Borrelly:
This Comet's A Star.
- 27 Sep 01 The Canberra Times: Avoiding
a collision course with calamity - Should an asteroid be
our way, we need to spot it early, says Michael Paine, but the
Government doesn't see it that way. Note this was written a week
the dreadful events in the USA.
- 27 Sep 01 EROS Specials BBC: Asteroid's
mystery 'blue ponds' [of dust] (Eros) + NEAR: A
Collision Worth a Thousand Boulders + Nature: Rock garden on
Eros + SciAm: One
Crater on Eros
Ejected Most of the Asteroid's Surface Rocks.
- 27 Sep 01 BBC: Earliest
presence of humans in east Asia (see Indochina
- 26 Sep 01 BBC: 'Stupendous'
comet pictures revealed. JPL site. Also from
reptiles survived the big one (Permian extinction).The theory
that an asteroid or comet slammed into the planet, wiping out most
living things, may have to be revised following the discovery...They
say an extraterrestrial impact would have had far-reaching effects on
Earth, and propose that the extinction was caused by something else. However,
the environmental effects of impacts are
very complex and may account for the observations.
- 25 Sep 01 Nature: NOVEMBER'S
SHOWER COULD CAUSE COMMUNICATIONS HAVOC (CC). Predictions
by Asher and McNaught last year were successful. Armagh Observatory
- 24 Sep 01 JPL: Deep
1's risky encounter with comet Borrelly has gone extremely well. Space.com.
- 23 Sep 01 Opinion: CARL SAGAN'S
WARNING ABOUT THE REPTILE WITHIN US.
- 22 Sep 01 BBC: Countdown
to comet encounter (DS1)
- 21 Sep 01 BBC: The
destructive forces unleashed - note that the 1908 Tunguska impact
(probably by a comet fragment) is missing from the list at the foot of
the article. The Tunguska object had a kinetic energy of about 6x10^16
Joules or 15 Mt of TNT. This was around a 1000 times that of the
Hiroshima bomb so the potential for destruction of cities is very
serious. Tunguska was probably the largest geographically
indiscriminate explosion of the last century (volcanic explosions such
as Mt St Helens and major earthquakes are confined to geologically
active and somewhat predictable areas but cosmic impacts can occur
anywhere at any time). Events like Tunguska may occur with a typical
frequency of about once per century. I have estimated that there is an
annual probabilty of about 1 in 1000 that such an explosion will occur
over a populated region of the Earth.
- 20 Sep 01 Nature: Brimstone
- Two hundred million years before the dinosaurs' demise another
impact may have devastated life on Earth.
- 20 Sep 01: Space.com: Shrouded in Mystery: Why
Astronomers Want to Bag a Comet on Saturday + Wounded
Probe Plans Daring Comet Flyby Saturday.
- 12 Sep 01 SpaceDaily: NASA Tech Probe
Approach For Deep Space Encounter (with comet Borrelly on
22 Sep) Yahoo.NASA mission log for
- 11 Sep 01 Tumbling Stone:Special
about asteroid 2001 PM9 + Pre-prints from University of
asteroidal origin of the Tunguska Cosmic Body + Yahoo NASA
Spacecraft To Fly Near Comet (CC)
- 7 Sep 01 CCNet: New Scientist: UK
ACCUSED OF IGNORING ASTEROID THREAT Another problem is
that no-one is searching for objects in the southern hemisphere. Steel
did have a programme from 1990 to 1996 at the Anglo-Australian
observatory...+ Scotsman: BRITAIN
MUST SPEND MILLIONS TO PROTECT AGAINST ASTEROIDS AND COMETS +
Science Friday Asteroid
Defense - radio program with Jay Tate, Erik Asphaug and Don
- 7 Sep 01 SMH: TAXPAYERS
PRIMED TO SAVE ANSETT (Airlines) - The Deputy Prime Minister, Mr
Anderson, has admitted that Australian taxpayers may have to help fund
a $1 billion rescue of Ansett (opinion: but they can't afford a few
million $ to set
- 7 Sep 01 CNN: Meteor
Over East Coast Identified As Russian Space Junk (NNN)
- 6 Sep 01 Charlotte Times: Many
questions remain on Chesapeake crater (NNN).
- 4 Sep 01 BBC: Low
sounds detect meteor blast.
- 3 Sep 01 SpaceDaily: Spaceguard - A
Bargain Insurance Policy Against Killer AsteroidsDaily
- 29 Aug 01 Space.com: Amateur
Comet Hunter Beats Computers to Discovery. + Rare
Canadian Meteorite Tagged as First of Its Kind Found on Earth. + Comet-Bound
Spacecraft Saved Again.
- 29 Aug 01 BBC: Giant
wave devastation feared (Landslide generated - but there are considerable differences in the tsunami
- 29 Aug 01 Astronomy.com: LARGE
EARTH-CROSSING ASTEROID FOUND (CC)
- 29 Aug 01 SpaceDaily: SCRIPPS HAS THE EAR
OUT FOR NUKES AND ASTEROIDS ALIKE (CC)
- 28 Aug 2001: GSA Permian
Extraterrestrial Impact Caused Largest Mass Extinction on Earth. ...an
asteroid or a
comet hit the ocean at the end of the Permian, triggered a rapid and
massive release of sulfur from the mantle to the ocean-atmosphere
system, swooped up a significant amount of oxygen, precipitated acid
rain, and possibly set off large-scale
- 27 Aug 01 AIAA:
of a workshop held in March 2001 that covered the NEO issue - see page
15 of the workshop report (thanks Andy Smith and CCNet).
- 27 Aug 01 BBC: Giant
asteroid enters the record books. ESO
- 24 Aug 01 CCNet:
a brief flurry last weekend when initial observations suggested
a large (1.5km?) asteroid might (roughly one in a million
with the Earth in 2005 or 2007. As can be expected in these cases, with
observations the possibility reduced to zero. The importance of
observations is once again demonstrated and the lack of a major
program in the southern hemisphere is highlighted (MP). Space.com.
- 22 Aug 01 PSRD: Uranus,
Neptune, and the Mountains of the Moon - The tardy formation of
Uranus and Neptune
might have caused the intense bombardment of the Moon 3.9 billion years
- 19 Aug 01 BBC: [UK] Centre
to study asteroid threat. Submit
a bid? (DTI) Space.com.
- 17 Aug 01: New book 'Tsunami'
by Ted Bryant, discusses impact tsunami in detail.
- 17 Aug 01 Space.com:
Signs of Comets Spotted Around Another Star (NNN) + 24
Hours of Chaos: The Day The Moon Was Made.
- 16 Aug 01 BBC: [Computer simulations suggest] Moon
younger than thought (see also Nature) -
work and comments by Erik Asphaug and Jay Melosh. The ultimate
planetary collision! SwRI
- 14 Aug 01 CNN: Did
asteroid help dinosaurs rule Earth? (NNN)
- 11 Aug 01 SciAm: Perseid Meteor Shower
Sets the Stage for November's Leonids.
- 4 Aug 01 The Star: Fireball
lights the night over Kitchener (NNN)
- 3 Aug 01 Space.com: Summer
Meteor Spotlights Hunt for Killer Asteroids. (also Yahoo)
- 2 Aug 01 Space.com: Asteroid
May Have Created Hawaii (volcanic hot spots) (refs) (Italian version)
Cooperation Urged to Tackle 21st Century Space Issues.
- 1 Aug 01 NASA: Approach to
an Asteroid - NEAR Movie + DOD Satellites Detects
Fireball Over Eastern United States.
- 29 Jul 01 NASA: Meteorites
Don't Pop Corn. Also Space.com East
Coast Fireball Most Likely Exploding Asteroid.
- 29 Jul 01: The current issue of Meteorite
has an excellent review of the use of C60 Buckminster fullerenes to
identify impact events: Extraterrestrial Causality for the
Permian-Triassic Extinction by Gregory T. Shanos (not currently
- 27 Jul 01 BBC: Disaster
that struck the ancients - no suggestion of an impact-related event
(so far!) but an interesting report on the
of climate change.
- 24 Jul 01 UniSci: Iron From
Probe Early Solar Nebula. (check also their related links)
- 23 Jul 01 (back from holiday): Sourcerunner.com The
"Out of This World" Threat (plus interview with Benny Peiser). Text copy
if, like me, you have trouble reading the tiny fonts.
- 13 Jun 01 SpaceDaily: Life's Rocky Road
Between Worlds (Paper on transpermia by Michael Paine)
- 13 Jun 01 PSS: Are
we approaching the end of asteroid-discovery? + The
end-cretaceous mass extinction in the marine realm: year 2000 assessment
evolution and collisions of asteroids with the earth.
- 8 Jun 01: Earth System
Processes - Global Meeting (June 24-28, 2001) Edinburgh - covers
climate change and extinctions. (thanks Hermann Burchard)
- 5 Jun 01 CCNet:
Report by Andy Smith on the Asteroid/Comet (AC) Workshop at the
International Space Development Conference in Albuquerque last week.
- 2 Jun 01 Space.com: Asteroid
Busting: We Have the Technology. see also Defending
Earth: Chasing comets.
- 1 Jun 01 Spaceflight Now: Why doesn't
Eros have a magnetic field? (NNN)
- 1 Jun 01: New book on
tsunami by Ted Bryant. Includes asteroid-generated tsunami (CC)
- 31 May 01 JPL: Near-Earth
Asteroid is Two Chunks in One.
- 25 May 01 Space.com: Deep
Impact Approved: Humanity's Turn to Slam into a Comet - see also Defending
Earth: Chasing comets. Plus Listening
for Nukes: A Meteor Detection Project. Also ENN.
- 24 May 01 BBC: New
world rivals Pluto - at 900km just under my preferred
definition of a "planet". Also Space.com.
- 18 May 01 ESA: SOHOs
unique view of a comet that fell to pieces.
- 18 May 01 NASA: IN
COMING APART, COMET LINEAR EXPOSES ITS DEEPEST SECRETS. (NNN), Cosmic Ancestory has
links to several items on this. Also Scientific American.
- 18 May 01 Space.com: A
Comet's Life: Icy Adventure From Birth to Death.
- 18 May 2001: 'The Asteroid Tsunami Project at Los Alamos' by
Jack Hills and Patrick Goda, Science of Tsunami Hazards,
Vol 19 No.1 (2001) 55-65. Describes the effects ocean
impacts by asteroids 5km and 10km in diameter. The authors indicate
there is uncertainty about their earlier work involving smaller
asteroids ('Dispersion may greatly reduce the effectiveness of the
smaller impactors at large distances') and they are
developing improved models. They point out that localised tsunami
effects can be delayed and that peaks can occur well after the first
- 14 May 01 BBC: Author
Douglas Adams dies - creator of the magnificant and highly
imaginative space fiction show Hitchhiker's Guide to the
Galaxy. In the weirdest of co-incidences, on the day he
died an asteroid was formally named 'Arthurdent'.
He was also a prominent critic of the quality
of PC software.
- 14 May 01 Science: SUDDEN PRODUCTIVITY
COLLAPSE ASSOCIATED WITH THE TRIASSIC-JURASSIC BOUNDARY MASS EXTINCTION
(subs reqd). Uni
(CC, NNN) Andrew Glikson comments: A major extinction at the
end-Triassic has been established earlier (Newell, 1967; Stanley, 1987;
Sepkoski, 1993; Hallam, 1997). Organic carbon and light carbon
enrichment (the so-called "graveyard shift") has been observed along
several impact boundaries
Frasnian-Famenian [late Devonian],Permian-Triassic, K-T). The
end-Triassic constitutes a heavy extraterrestrial bombardment period,
the cluster consisting of Manicouagan (Quebec; D=100 km; 212+/-2 Ma),
D=80 km; 220+/-10 Ma), Saint Martin (Manitoba; D=40 km; 220+/-32 Ma),
(Dakota; D=9 km; 200+/-25 Ma) and possibly Kara-Kul (Tajakistan; D=52
- 14 May 01: International
Conference On Asteroids, Comets, Meteors (ACM2002) - Berlin, July
- August 2, 2002. (CC, NNN)
- 11 May 01 Space.com: Insurance
Plans for Humanity's Survival.
- 6 May 01 Excite: Scientists
Worry Over Asteroids.
- 5 May 01:Workshop The
of Potential Earth Impactors: KNOW
YOUR ENEMY. Italy 17 -
25 June 2001 (CC)
- 5 May 01 Guardian: AS
COOL AS THE COSMOS - want to find extraterrestial material? Try the
sludge in the gutters of your house! (CC)
- 3 May 01 NearEarth.net: Comet
LINEAR Splits in Two. Also Space.com.
- 25 Apr 01 Space.com: Reinventing
Darwin Again: How Asteroids Impacted Human Evolution. See also a graph and impacts and human evolution.
Also MSNBC with a
- 24 Apr 01 Courier Mail: Mystery
Boom Rocks Eastern Australia (NNN) Possibly a fireball
- 23 Apr 01 Space.com: Asteroid-Hunting
Telescope Gets a Boost. Also Star-Hopping
Travelers Could Sow Seeds of Life.
- 22 Apr 01 LATimes: Tsunami
Struck 80,000 Years Ago (thanks Steve Ward)
- 22 Apr 01 Space.com: Asteroid
Eros: Most Detailed Analysis of Up-Close Images (NNN)
- 22 Apr 01 AP: Fireball
stuns sky watchers (over Western Australia). Also Doom's
day news protocol wanted (NNN)
- 22 Apr 01 More on impacts and human evolution: The Times,
Association, Daily Express (18/4) (CC). See also reactions on CCNet 18/4 and
- 18 Apr 01 CCNet: An
International Workshop on Collaboration and Coordination
Among NEO Observers and Orbital Computers, Okayama, Japan October
to 26, 2001 - The Japan Spaceguard Association.
- 15 Apr 01 SciAm: Deeper
Impact - Was yet another mass extinction (PT) the work of an
- 15 Apr 01 The Times: Cosmic
golf could smash cities - sounds like a good idea for a great fiction novel
- 15 Apr 01 SciAm: An Orbital Anomaly Once
- 13 Apr 01 BBC: Asteroids
'affected human evolution'. Simulation
details. See also the Rough Guide to Impact
Anthropologists, Palaeontologists and Geologists.
- 13 Apr 01 NASA: NASA TO
TRACK MORE ASTEROIDS WITH NEW NEAT CAMERA.
- 12 Apr 01 ESA:
'Giotto Heritage' symposium - comet fly-bys.
- 9 Apr 01: PDF versions of Rocks in Space articles available.
- 9 Apr 01 Mercury News: Meteorites
from Mars, moon discovered in Africa.
- 6 Apr 01 New Scientist: NEPTUNE
ATTACKS! - possible source of the late heavy bombardment.
- 5 Apr 01 Mirror: Space rock
may destroy England - but then again, don't lose any sleep!
- 4 Apr 01 Nature: HOT FLUSH OVER
- 4 Apr 01 Space.com: NEMESIS:
DOES THE SUN HAVE A 'COMPANION'? (CC)
- 4 Apr 01 SpaceDaily: Understanding
Life's Impact - talks by Duncan Steel. Also Daily
- 4 Apr 01 Journal of Petroleum Geology: Astroblemes and
oil - a 1981 "classic" by Richard Donofrio (see also Prospecting for Oil? Look in asteroid impact
- 4 Apr 01 Spaceguard Central Node: NEW
OBSERVATIONS ELIMINATE COLLISION PROBABILITIES FOR ASTEROID 1998 OX4 (CC)
- 3 Apr 01 The Ottawa Citizen: Yukon
meteorite dates back to origins of the solar system (NNN)
- 1 Apr 2001 NearEarth.net: Dramatic Outburst of Comet C/2001 A2
- 29 Mar 01 Space.com: Apollo
Moon Rocks: Dirty Little Secrets - Andrew Steele found a few
earthly organisms having a picnic within lunar samples...more links.
- 28 Mar 01
CCNet: COMETARY IMPACTS AND ICE-AGES by Fred Hoyle and Chandra
- 28 Mar 01 PAXTV: Is
There a Doomsday Asteroid? Airs in the US Friday, March 30 (Duncan
- 27 Mar 01 ESA: Future
missions may have a major impact - A 100 metre-wide space
rock known as 2001 EC16 paid a passing visit to Earth's vicinity
earlier today (NNN)
- 26 Mar 01: Rob McNaught
describes NEO followup observations.
- 26 Mar 01: Issue 2 of
Tumbling Stone - a newsletter of the Spaceguard Foundation.
- 26 Mar 01: ABJ: 3
Big Scopes Keep Satellite Vigil - The two main telescopes at
the site have a 40-inch aperture and cost around $10 million
each...can sense light bouncing off a soccer-ball-sized object 20,000
miles away. Staffing the station are the single master sergeant and 18
civilian computer operators and technicians (Probably more than
the entire global Spaceguard effort).
- 24 Mar 01 Space.com: Circumstellar
Habitable Zones IV: What Makes a Friendly Neighborhood? (discusses
- 24 Mar 01 New Scientist: Sting
in the tail - Without even hitting Earth, a comet could be as
lethal as an asteroid and Target
Earth - Countless chunks of space rock criss-cross Earth's
and sooner or later there'll be one heading straight for us. (CC)
- 24 Mar 01 ENN: Researcher
Says Tons of the Moon on the Earth; Tektite Events May Have Triggered
(CC) - seems tenuous.
- 23 Mar 01 New Scientist: Impact
in a teacup - misinformed letter to the editor, but the cartoon is
- 22 Mar 01 The
Bulletin: Armageddon Times - Paul Davies reports on the steps
can take to save itself from annihilation - a great plug for Spaceguard
(27 Mar edition, not online - circulation 80,000). Note that some late
to correct a few technical errors didn't make it to the editor in time!
- 22 Mar 01 Space.com: Huge
East Coast Impact Crater Leaves Legacy of Water Woes. Also USGS.
- 22 Mar 01 ESA: Comet
McNaught-Hartley Provides A Wealth Of New X-Ray Data (NNN).
- 22 Mar 01 SpaceDaily: Hubble Finds
New Asteroid Moon.
- 18 Mar 01 Astronomy.com: An
Asteroid Led to the "Great Dying". (see 23 Feb)
a Collision Course. (see 2 Mar)
- 18 Mar 01 Daily Telegraph: Flying
ice block may have alien origin. A NEW theory has emerged in the
mystery surrounding a lumpof ice that fell through the roof of a
Harbord home (hey that's 3km from where I live!) -- it could have
come from a comet.
Mar 01 Sky & Telescope: AN EYEWITNESS IMPACT
DEBUNKED - Lunar Crater Bruno
not associated with 1178AD event. (NNN). Also more from
Paul Withers. (CC) Scientific American.
- 17 Mar 01 SpaceDaily: All Aboard the
Meteor Express of Life (interstellar
- 16 Mar 01 CSM: When
asteroids get too close for comfort.
- 16 Mar 01 Astronomy.com: A
Nutty Effect on Eros.
- 16 Mar 01 Space.com: Japanese
scientists suggest looking for evidence of asteroid tsunami on Mars.
- 15 Mar 01 MSNBC: MYSTERIES GALORE ON MOONS
- 15 Mar 01: ST
PATRICK¹S GIFT TO ARMAGH (naming of asteroids)
- 14 Mar 01 SpaceDaily: Life On The Rebound
- after the KT impact.
- 12 Mar 01: Crater graph updated.
- 10 Mar 01 Space.com: Asteroid
Impact Motto: Be Prepared. (see 2 Mar 01).
- 10 Mar 01: Ceres
2001" Workshop on Astrometry and Physics of Minor Planets.
October 9-12, 2001, in Paris, France. (NNN)
- 9 Mar 01 BBC: 'Quick'
demise for the dinosaurs. The work lends support to the idea
a single, giant impact of an asteroid or comet was responsible for the
mass extinction of life that occurred 65 million years ago. In so
doing, the research also undermines the popular, alternative theory for
the demise of the dinosaurs: climate change brought on by huge volcanic
- 9 Mar 01 Space.com: Comet
Hale-Bopp Still Active, New Image Shows. Also Cosmic
Smack Encourages Life To Go Forth and Multiply.
- 9 Mar 01 UK Govt: NEAR
EARTH OBJECTS - Hansard (CC) House of Lords critical of
report. Note the article understated the consequences
of an impact, on central London, by a 1km asteroid:
- London would now be a crater 20km across and several km
- Everything out to a radius of about 150km would have been
burnt or blasted like the centre of Hiroshima. Trees would have been
knocked over 300km
- The rest of the UK, and much of Europe would have been
covered in a dense dark cloud turning day into night, like the effects
of Mt Pinatubo in the Phillipines.
- Massive earthquakes and hurricanes would have finished off
any remaining infrastructure in the region.
- 8 Mar 01: National
Physics Congress 2001 - 18-22 March in Brighton, UK. Asteroid
impact lectures (CC).
- 3 Mar 01 SpaceDaily: New Evidence For
Theory. Previous items.
- 3 Mar 01 PSRD: Relicts from
- 2 Mar 01 PSRD: Helium and
argon isotopes in fullerenes suggest an impact triggered the incredible
extinction that marks the end of the Permian period - analysis of
the recent announcement. Note that there are some critics of the
fullerene research. See CCNet
- 2 Mar 01: THE COMET/ASTEROID
IMPACT HAZARD: A SYSTEMS APPROACH - new paper by Chapman, Durda and
Gold. Boston Globe: A
DANGEROUS ASTEROID WOULD CATCH U.S. UNREADY (CC).
- 2 Mar 01 Astronomy.com: Sylvia's
Companion Another moon has been found orbiting an asteroid (NNN)
- 28 Feb 01 NASA Science News: Gamma-Rays
from an Asteroid - NEAR Shoemaker is beaming back data that
confirm what many scientists have lately come to believe: Asteroid Eros
not a piece of some long-dead planet or a loose collection of space
Instead, it's a relic from the
dawn of our solar system... BUT the "extended mission"
- 27 Feb 01 from Duncan Steel to CCNet: Those
readers interested in cricket (doubtless the majority of CCNet
subscribers) will have
been sad to hear of the death of Sir Donald Bradman, the greatest
batsman of all time. Despite the fact that all three of use are 'poms'
by birth (and thus originate from Australia's great cricketing enemy),
a few years back Brian Marsden, Gareth Williams and myself were pleased
to suggest that The Don's name should be attached to an asteroid. (2472)
Bradman perpetuates his memory amongst cricket-loving astronomers (and
maybe astronomy-loving cricketers too).
- 27 Feb 01 BBC: UK
asteroid response 'unsatisfactory'. Space.com.
Scientist. (watch out for "Target Earth" in the March 3 issue).
- 25 Feb 01 : UK
GOVERNMENT RESPONSE TO THE REPORT OF THE TASK FORCE ON POTENTIALLY
HAZARDOUS NEAR EARTH OBJECTS. BBC.
The UK intends to join the European Southern
Observatory (ESO) whose telescopes are in the southern hemisphere. ESO
has indicated that
it is interested in exploring with the UK the possibility that a 3
metre-class telescope could be made available at its observing sites in
Chile. This could take the form of the new telescope envisaged in the
recommendation, or a modification
of one of ESO's existing 2-4 metre telescopes. As
advised in our press
release of 19 Sept 2000, this is a huge blow for Australian
astronomy. Press Release of 25 Feb 01.
- 24 Feb 01 Yahoo: Watch
Is on for Doomsday Asteroids, Comets.
- 24 Feb 01 NASA: Proposal
for a giant telescope to be used for some Spaceguard work. (CC)
- 24 Feb 01 ESA: SOHO
ANALYSES KAMIKAZE COMET.(CC) Also Spaceflight Now.
- 23 Feb 01 Space.com: Mass
Extinction & Rise of Dinosaurs Tied to Cosmic Collision. Also Washington
Uni press release (from Science).
- 21 Feb 01 Space.com: NEAR
Collects Data From Asteroid's Surface. Also BBC
- including the puzzling lack of small craters.
- 17 Feb 01 Space.com: Traveling
to the Dawn of the Solar System.
- 15 Feb 01 NASA: 32nd Lunar and
Planetary Science Conference - March 12-16, 2001, Houston. See the abstracts.
- 15 Feb 01 Space.com: NEAR
Re-launch Decision Expected: More Asteroid Pics Possible and Asteroid
Landing Mission Could Be Extended.
- 14 Feb 01 Bard College, NY: Course on Catastrophe/Apocalypse
- 14 Feb 01 TPS: The
Planetary Society Rewards Sky-Watchers - NEO Gene Shoemaker Grants
- 14 Feb 01 Space.com: Spacecraft
Makes Historic First-Ever Asteroid Landing. Also coverage of
Spaceflight Now and CNN.
- 13 Feb 01 JHU:
The first spacecraft to orbit an asteroid has become the
first to land on one. At 3:07 p.m. EST today, NEAR mission operators at
the Johns Hopkins University Applied Physics Laboratory confirmed that
the NEAR Shoemaker spacecraft had touched down on the surface of
asteroid 433 Eros.
- 12 Feb 01: New Defence
Minister Reith indifferent to the Spaceguard issue
- 11 Feb 01 NASA:
TO COVER THE FIRST TOUCHDOWN ON AN ASTEROID. The descent onto NEAR
starts at 16.00 Feb 12 GMT and the touchdown should occur around 20.00
GMT (that will be about
9am Tuesday in Sydney). NASA's webserver
will have live streaming BUT it will probably be very busy (some mirror
sites would be appreciated!)... do not expect images to be
transmitted from the
surface because Eros's spin and topography will almost certainly
between Earth and the craft.
- 7 Feb 01 CCNet: Eros
special. Including Mark Sonter's comment - deflection by an
emplaced propulsion system that uses reaction
mass mined from the body becomes the method of choice...
- 6 Feb 01 CCNet: THE
GEOLOGICAL RECORD OF IMPACTS ON THE EARTH AT ROYAL ASTRONOMICAL
SOCIETY'S LONDON MEETING ON
- 6 Feb 01 The Observer: BID
TO LAND ON ASTEROID COULD SAVE EARTH FROM DISASTER (CCnet) See also
Earth: Fact Vs Fiction
- 6 Feb 01 SpaceDaily: EARTH
FACES 38 CLOSE ENCOUNTERS OF THE ASTEROID KIND, RUSSIA WARNS (but Benny Peiser
points out that it all depends on how close an encounter we are
talking about - 30 million km is not "close" or "hazardous")
- 3 Feb 01 PSRD: Lunar
meteorites and the lunar cataclysm. What would it be like to
17,000 Chicxulub craters in [200 million years]? ...Some would have
enough heat into the Earth's atmosphere to boil the oceans away.
that is why the oldest evidence we have for life on Earth is 3.85
years old - perhaps any life that got started before that was destroyed
the Cataclysm. On the other hand, there are some
forms of life that might not find it so bad...
- 3 Feb 01 Conference: ASTEROIDS 2001:
From Piazzi to the 3rd Millennium, Italy, 11-16 June 2001. (CC)
- 3 Feb 01 NEAR team: [Picture of] NEAR Shoemaker's Touchdown
- 1 Feb 01 SpaceDaily: Climate
Change Has Impacted Civilizations For Millennia. See this CCNet item..
- 1 Feb 01 NASA: COMET
COLLISIONS: ONLY THE STRONG SURVIVED? (NNN). Space.com.
- 31 Jan 01 Daily Yomiuri: Young
researchers prepare to launch cubic satellites - to observe Leonids
and more (NNN).
- 31 Jan 01 The Dallas News: Prehistoric
meteorite punched hole in crust - KT impact (NNN). Uni
Texas research and PR.
- 31 Jan 01 Science: WHAT
DRIVES SOCIETAL COLLAPSE? - climate disruption. (CC)
- 28 Jan 01 Calgery Herald: Fireball
visible from Edmonton to Calgary. (NNN)
- 26 Jan 01 SpaceDaily: CATASTOPHES AND
HUMAN EVOLUTION: OBSERVATIONS ON THE FUTURE OF MAN. Also Despite
Periodic Pummeling, Conditions Were Ripe For Earth Life.
- 26 Jan 01 JBNSC: INTERVIEW
WITH NEO TASK FORCE CHAIRMAN HARRY ATKINSON - For the 3 metre
telescope, a keystone of our science recommendations, we propose a
other countries...! (CC)
- 24 Jan 01 Star Bulletin: Uni Hawaii
scientist may help lead asteroid mission (to Vesta and Ceres) (NNN)
- 24 Jan 01 Space.com: Japanese
Team Finds 3,554 Meteorites (in Antarctic search).
- 22 Jan 01 CCNet: Tony
Blair's brief (but +ve) response to a question on Spaceguard, Jay
Tate's UK Spaceguard update (and annoucement that he is setting up an
observatory in Wales) and David Morrision's status of NASA's Spaceguard
- 22 Jan 01 NEAR: NEAR Shoemaker
Scratches Below the Surface (NNN)
- 22 Jan 01 TPS: 2000
Gene Shoemaker NEO Grant Recipients Selected.
- 20 Jan 01 Deseretnews: Ancient
crater is a window on past - Vredefort impact structure (NNN)
- 18 Jan 01 NYT: NASA
Aims to Blast Comet to Study Solar System - Deep Impact mission (CC). Also Space.com.
- 17 Jan 01: Description of Woodleigh
impact structure (from May 2000).
- 17 Jan 01 Kansas City Star: COUNT
ON LIVERPOOL TO PROVIDE A NEW ROCK SENSATION (CC).
- 17 Jan 01 UT:SHOOTING
STAR? KILLER SPACE ROCK? NO, JUST A LITTLE STARDUST. Also AP.
- 16 Jan 01 The Australian: [Australian]
Government blind to need for observatory. (CC)
- 16 Jan 01 Sunday Times: Government
to back asteroid initiative - The [UK] government is expected
announce plans this week to avert the risk of an asteroid strike...(CC)
- 11 Jan 01 (back from holiday!):
- 1 Jan 01! The Independent: SPACE
WATCH FOR EARTH-BOUND ASTEROIDS - The (UK) Government is
to approve construction of a £10m telescopeearly in the New Year
which would be dedicated to finding comets and asteroids before they
hit Earth. Also The Guardian: 2001:
A Space Anniversary by Duncan Steel. (CC)
- 29 Dec 2000 CNN: The
Real HAL: Artificial Intelligence in Space (Deep Space 1) - see
- 29 Dec 2000: Big Bend web cam
captures image of rare daylight fireball (NNN)
- 29 Dec 2000 NEAR Science Update: More
Mysteries (of Eros) (NNN)
- 29 Dec 2000 Space.com: Space
ANTS: Futuristic Probes to Cruise Asteroid Belt - see also Riches
rubble of the Solar System.
- 28 Dec 2000 Space.com: Volcanoes
Bigger Threat than Asteroids, Scientist Says - Comment: I have
some very rough calculations on the relative threat between NEO impacts
volcano eruptions that are large enough to cause global climatic
The average interval worked out at about 20,000 years and 2,000 years
respectively so, by this crude method volcanoes are more of a threat
I can understand volcanologists becoming a little frustrated that
"scares" seem to grab the headlines but, on the other hand, it would be
if worldwide funding for Spaceguard managed to reach one tenth of
the study of volcanoes!
- 23 Dec 2000 NASA: ASTEROID
SAMPLE RETURN OBJECT OF SPACE MISSION PROPOSED BY UNIVERSITY OF
and Russian NEO status:
For the first time in history, we have reached a
sufficiently high level of
technology to cope with the danger, by finding the hazardous objects in
and by adopting measures able to prevent space impacts. The unanswered
question is whether we, as a global society, are ready and willing to
provide the resources
necessary to preserve our safety, or whether we will postpone such a
until the next disaster actually happens.
- 23 Dec 2000 Space.com: Space Rock
to Pass Earth in Close Shave.
- 22 Dec 2000: Avoiding Collisions: the Spaceguard Foundation
by Jay Tate, Journal
of Space Policy, Vol 16, No 4, 4 Nov 2000 (not online).
- 22 Dec 2000 RAS: THE GEOLOGICAL RECORD OF IMPACTS ON THE
ROYAL ASTRONOMICAL SOCIETY DISCUSSION MEETING on 9 February 2001,
For further information please contact Adrian Jones (CC)
- 22 Dec 2000 National Geographic: GETTING
SERIOUS ABOUT ASTEROID STRIKES. (CC)
- 21 Dec 2000: NearEarth: A naked
eye comet for Christmas 2001?
- 19 Dec 2000 Uni Rochester: DESPITE
PERIODIC PUMMELING, CONDITIONS ON EARLY EARTH WERE RIPE FOR LIFE
(CC) (again the 'lifeboats
in space' suggestion has not been raised)
- 18 Dec 2000 Uni Austin: New
Geophysical Data Link Yucatan Crater To Mass Extinction Of Dinosaurs
Jersey Online, NYT
(CC) - note the effects of impacts are not just limited to "dust".
- 16 Dec 2000: New web-based asteroid data service AstDyS The main
purpose of this site is to document our research in asteroid orbit
long term dynamics. (CC)
- 13 Dec 2000 Nature: More asteroids
caught in Trojan force traps - The asteroid belt between Mars
and Jupiter may not be alone in harbouring debris left over from the
formation of the planets. New calculations hint there could be similar
asteroid hoards associated with planets nearer the Sun. This lends
added urgency to scientists' eager scrutiny of the belt once regarded
as the trash heap of the solar system, now deemed a potential source of
rare minerals or of bodies on a collision course with Earth. (NNN)
(just hope they are not as big as the 50km asteroid Ida shown in the
- 9 Dec 2000: THE REALLY,
REALLY BIG DIG: MINING ASTEROIDS THE FUTURE OF ISS? (CC)
- 9 Dec 2000 Space.com: Cometcatcher
Trims Course for Earth Flyby - Stardust mission.
- 8 Dec 2000 Space.com: Catastrophe,
Mother of Evolution: Life Survived Early Bombardment.
- 2 Dec 2000 S&T: A Kuiper-belt Giant?
Possibly several 100 km in diameter (maybe over 1000km!). Discovered
by Spacewatch on 28 Nov.
- 1 Dec 2000 BBC: Lunar
meteorites reveal life's troubles.
- 29 Nov 2000 Scientific American: The
Editors Recommend David H. Levy's Shoemaker
by Levy: The Man Who Made an Impact.
- 29 Nov 2000 NASA: LIFE UNDER
BOMBARDMENT (odd that my 'lifeboats
in space' suggestion has not been raised). (CC)
- 29 Nov 2000 The Daily Evergreen: Professor
keeps eye on asteroid (Toutatis) (NN)
- 28 Nov 2000 Excite News: 'Target
Earth' Helps Sort Science-Fact From Science-Fiction.
- 27 Nov 2000 NearEarth.net:
Utsunomya-Jones: A second binocular comet for Christmas?
- 26 Nov 2000: Looking for a Christmas present? Take Reader's Digest advice
and consider "Target
Earth" by Duncan Steel.
- 23 Nov 2000 NASA:
LEONIDS GALORE - Predictions by Rob McNaught and David Asher
- 23 Nov 2000 PSRD: Mining
the Moon, Mars and Asteroids.
- 23 Nov 2000 Space.com: Spacecraft
Once More Unto the Breach (dust and micrometeorites)
- 23 Nov 2000 CNet News: IBM
supercomputer to analyze objects in Earth's orbit (mostly space
- 21 Nov 2000 SpaceDaily: Massive Lava
Flows Triggered Apocalyptic Climate Changes. Also University
- 21 Nov 2000 Washington Post: No
Asteroids Dropped - NASA response to claims that Spacegaurd is
- 18 Nov 2000 UniSci: Is Mexico's Impact
Crater Linked To Mass Extinctions? See animation at Impact
Crater Collapse. Also Space.com
- 18 Nov 2000 Space.com: Satellites,
Station Readied for Leonid Meteor Shower. See also our old news
items - Marshall
Engineers Undertake Real-Life ‘Mission’ To Protect NASA Spacecraft,
Crews in Event of Damage (21 Mar 2000) and The
right stuff (23 Dec 1999).
- 16 Nov 2000: Abstracts
of Space Protection of the Earth - 2000 - held September 11-15,
2000, Evpatoriya, Crimea, Ukraine. Space Shield
- 15 Nov 2000 NASA: NEAR Team
Releases Low-Flyover Movie.
- 15 Nov 2000 Space.com: The
Leonids, Coming This Weekend to Skies Near You.
- 13 Nov 2000 YOWUSA: Asteroids
- NASA’s Fire of Fallacies and Australia’s Atrocious Actions
- 12 Nov 2000 LA Times: Sometimes
the Sky Does Fall.
- 12 Nov 2000 Space.com: Mining
Space: Whither NASA? see also Riches
in the rubble of the Solar System.
- 8 Nov 2000 NASA: Much Ado
about 2000 SG344 - summary of events, with orbit diagram.
- 6 Nov 2000 SMH: Asteroid
threatens major impact with Earth - "major"?? Unfortunately the
editors of Sydney Morning Herald ignored an email I sent to them
yesterday pointing out that there was no longer a threat in 2030.
- 5 Nov 2000 NearEarth.net: New
Precovery Data Reveals No Impact Threat in 2030. It happened sooner
than anyone thought - old data (May 1999) from the Catalina Sky
Survey has enabled the orbit of Asteroid 2000 SG344 to be
refined and shows that it will not be a threat in 2030. "Precovery"
involves searching through old images knowing approximately where an
object should be from the latest orbital data. (CC)
- 4 Nov 2000 IAU: Technical Review Team Assessment
on Asteroid 2000 SG344. According to current calculations there is
1 in 500
chance of a collision with the Earth in 2030. If it turrns out to be a
asteroid then its diameter would be around 50m. The energy in such a
would be about one tenth of theTunguska impact [in Siberia in 1908 -
2000 sq km of forest] and about 100 times the Hiroshima bomb.
observations over the next few months should significantly improve the
parameters and will probably reveal that it is not a threat, at
in 2030. There is a slight possibility that it is part of a Saturn
from an Apollo mission.(NNN). CCNet item.
- 4 Nov 2000 NASA: US withdraws
from MUSES-CN Japanese asteroid
- 4 Nov 2000 Space.com: Latest
NEAR Images Reveal Eros Asteroid's Special Surface.
- 2 Nov 2000 NSF: Astronomers
Find Surprising Double Asteroid and a New Asteroid Moon.
- 2 Nov 2000 The Guardian: Meet
Pluto's playmates by Duncan Steel.
- 1 Nov 2000 NASA: Trick or
Treat: It's Toutatis!
- 1 Nov 2000 CCNet: Japan
a large Apollo (Near Earth) asteroid - possibly between 5 and 12km
diameter - the size of the Dinosaur killer! MPEC 2000-U34
- 28 Oct 2000 Caltech: New
results on Martian meteorite support hypothesis that life can jump
between planets + links.
- 27 Oct 2000 JHU: Astronomers
Conducting Post-Mortem on Comet LINEAR.(CC)
- 27 Oct 2000 ANU: Geologist
helps discover world's 4th-largest crater (posted in April!)
- 27 Oct 2000 CCNet: 'UPPER EOCENE IMPACTS NOT
RELATED TO LATE EOCENE MASS EXTINCTION ' and 'ON THE
ATMOSPHERIC FRAGMENTATION OF SMALL ASTEROIDS'
- 26 Oct 2000 Alburquerque Journal: Estimate
of Killer (1km) Asteroids Zooms (from 700 back to 1,100!) - new
estimates from the LINEAR team (NNN). Also MIT, BBC
- 26 Oct 2000 USAToday: Astronomers Discover
Minor Planet Between Neptune and Pluto (2000 EB173). (NNN).
- 19 Oct 2000: Robert Clements has started an eGroup for Australian
space development. The first posting is about a Canadian initiative
to send a probe to an asteroid.
- 17 Oct 2000 CCNet: AN INTERVIEW
WITH SIR CRISPIN TICKELL and (near foot of page) Col Pete
Worden's response the UK NEO report - points out the reducing costs
of space-based telescopes.
- 17 Oct 2000: Asteroids
2001 conference - Palermo, Italy, 11-16 June 2001
- 17 Oct 2000: Finally the Washington Post runs with the UK
NEO report story!
- 14 Oct 2000: More on the Tagish Lake Meteorite - Science
Sun Times, BBC.
- 14 Oct 2000 MSNBC: Why meteorites
rain down on Earth.
- 12 Oct 2000 Inscight: The
Moonlit Leonids 2000 (storms predicted for 2001 & 2002).
- 12 Oct 2000 IAU Press Release: International
Research on Near-Earth Objects. (Support for UK report)
- 7 Oct 2000 Inscight: DOUBLE
ASTEROID FOUND CLOSE TO HOME. MPC.
search page (2000DP107).
- 6 Oct 2000 Spacewatch: New
Spacewatch Telescope Detects Its First Asteroids. Press
- 5 Oct 2000 Nature (reg
req'd): 'Efficient delivery of meteorites to the Earth from a wide
range of asteroid parent bodies' by D. VOKROUHLICKÝ AND P.
FARINELLA, Nature 407, 606 - 608 (2000). Also BBC.
- 3 Oct 2000 PSRD: The
Oldest Metal in the Solar System - Shiny grains of metal in a
type of stony meteorite called CH chondrites contain important
information about conditions in the cloud of gas and dust from which
the Sun and planets formed.
- 30 Sep 2000 SMH: Hit or
Miss - Australian NEO search
- 30 Sep 2000 NASA email newsletter: How often do NEOs come "close" to
- 29 Sep 2000 Scientific American (Oct 2000): Moonscape
- It is now pretty well demonstrated that these
rings (craters) were the result of intense volcanic action at
some remote period. (from October 1850!)
27 Sep 2000 NASA Science News: Square
Craters -NASA's NEAR Shoemaker spacecraft has
spotted square-shaped craters on asteroid Eros. And
- 25 Sep 2000 The Age: Asteroid
busters urge Australia to help avert the killer blow.
- 22Sep 2000 BBC: Scientists
get near the real Eros also NASA
- 21 Sep 2000 NASA: A Good
Month for Asteroids - a great summary of the topic of Near Earth
- 20 Sep 2000: Yesterday Rob McNaught was interviewed on PM
(an Australian rdaio show) - listen to the radio
interview with Rob + transcript
- 20 Sep 2000 More articles: UK Sunday Times: Asteroids
could shut down Earth, UK Independent: Taskforce
urges action on threat from asteroids, UK Telegraph: KILLER
ASTEROID THREAT TO EARTH, LAToday: Experts
mull asteroid risk, Panel pushes
for better asteroid detection, Risk
of asteroid impact 'very real,' expert says, S&T: A British Blueprint for
NEO Protection, Spaceviews: British Report
Recommends Investment in Asteroid Search, The Australian: Silver
lining at earth's end.
- 19 Sep 2000 Articles about the UK NEO Task Force report
(PDF file): Space.com
(Michael Paine), BBC,
to the report posted on CCNet. Space.com update: British
Asteroid Report Takes Some of Shine Off the Sydney Olympics.
- 18 Sep 2000: Latest
negative response from the Australian government.
- 18 Sep 2000: Several speculative articles about the
contents of the UK NEO Task Force report: THE
COSMIC TIME BOMB WAITING TO GO OFF (contain several obvious
SHOCK (Duncan Steel), HOW
I HELPED TO SAVE STAR TREK (Arthur C Clarke), BRITAIN
PLANS £25m SHIELD TO PREVENT ASTEROID COLLISIONS and ASTEROIDS
THREATEN EARTH (CC). Note that the estimated average interval
between impacts by a 100m asteroid is around 1,000 years, not the
10,000 years quoted in several of the above. I estimate that inhabited areas of Earth would
be struck by a 100m asteroid, on average, once every 8,000 years. Also
there are alternatives
to nuclear weapons for deflecting dangerous asteroids.
- 18 Sep 2000 Space.com: Human
Missions to Titan, Ganymede, Deep Space [and asteroids] In NASA's Future-
Travelling within this region, access to numbers of
asteroids become feasible. "In the region of space between Earth and
Jupiter, there are many tens of thousands of asteroids -- some
composed of valuable minerals, others of materials that could be used
to make propellants, in space
construction or for commercial ventures," the plan explains.
- 16 Sep 2000 Aust ABC: Near-miss
asteroid snapped by remote control and Another
asteroid heading for Earth. CSU
Press Release and images
(note the reported consequences of an impact are grossly
overtstated - see climate effects)
- 12 Sep 2000 SpaceDaily: Looking For
Meteorites On The Saskatchewan Prairies, Monsoon Has Long
History In World's Driest Desert. Combing The
Ocean Depths For Climate Clues. Massive
Accompanied Mass Extinction. Fossil
Tropical Pacific Leads Climatic Change.
- 11 Sep 2000: Sydney Channel 7 TV 'Asteroid:
the deadly impact' at 7.30pm
- 11 Sep 2000 Space.com: Spacecraft
Stardust's Blurry Vision Persists.
- 9 Sep 2000 CCNet: TUNGUSKA 2001
INTERNATIONAL CONFERENCE. (item 5)
- 9 Sep 2000 BBC: Tree
rings challenge history - Could a comet hitting the Earth 1,500
years ago have triggered a global disaster in which millions of people
lost their lives? Also The
Times . This was raised in 1999 in Discovering
- 8 Sep 2000 Space.com: Rocks
Reveal Details of Mass Extinction - possible evidence of a NEO
impact associated with the Permian extinction 251 million years ago.
- 5 Sep 2000 J
Space Policy: 'The mitigation, management and survivability of
asteroid/comet impact with Earth' Space Policy (Vol 16 (2000) 213-222)
(not online) - uses estimates of risk and fatalities from our tsunami page.
- 5 Sep 2000 ABC News: Guyra
meteorite probe to start.
- 5 Sep 2000 ABC News: NASA
develops laser 'broom' to clean up space - laser "broom"
of removing debris in the path of the International Space Station.
- 5 Sep 2000 ScienceDaily: Chemists
Find Primordial Meteorite In A Class By Itself. Also BBC.
space rock in British lab
- 2 Sep 2000 Sky & Telescope: 'Space Weathering'
Cements Asteroid-Meteorite Link (NNN)
- 2 Sep 2000 Space.com: Earth's
Offspring? The Collision Theory.
- 1 Sep 2000 Discovery: Meteor
Showers Explosive on Mars Meteors that would be little more
a flash in the sky on Earth can cause massive explosions, vast
and giant lightning bolts on Mars, say Russian scientists. (NNN)
- 1 Sep 2000 Space.com: New
Clues About Martian Meteorites Baffle Scientists.
- 31 Aug 2000: NEA 2000 QW7
within about 4.5 million km of the Earth tomorrow. Found by NEAT on 26
this object is around 400m in diameter (perhaps 800m). According to NEODys it
also make "close" approaches in 2019, 2038 & 2057. MPEC. NASA. S & T. NASA
Science News. NASA
interactive orbit. BBC.
- 31 Aug 2000 The Guardian: Hop
on an asteroid by Duncan Steel (CC).
- 30 Aug 2000 SpaceDaily: Meteorite
Contains Radioactivity Markers From Early Solar System - Allende
- 30 Aug 2000 Space.com: Japanese
Students Propose Meteor-Watching Satellite and Smaller
is Better: Microscouts Make the Grade. Also MSNBC.
- 29 Aug 2000 NASA: Comet
Champion of the Solar System - SOHO discoveries. Also BBC.
- 26 Aug 2000 NASA: Space
settlements - utilizing asteroids?
- 26 Aug 2000 Space.com: Canada's
Asteroid Protection Plan.
- 18 Aug 2000: Meteoritical
Society to meet in Chicago Aug. 28-Sept. 1 (CC) Abstracts
of the meeting (PDF).
- 16 Aug 2000 UniSci: Little Old
- 16 Aug 2000 NEAT: New
discovered - 2000 PN8
is a new Apollo Earth-crossing asteroid discovered with NEAT on 5
... NEAT follow-up from 6 August 2000. This object was moving more than
degrees/day with V ~ 19 mag. Follow-up observations were also performed
San Marcello Pistoiese (L. Tesi, A. Boattini, M. Tombelli), Loomberah [Australia](G.
Linz (E. Meyer), and Ondrejov (L. Sarounova). 2000 PN8 has an
and is only about 170 m (0.1 mile) in diameter (C. Hergenrother, MPC).
is not considered hazardous. Could be interesting for space
- 16 Aug 2000 Nature: When it's cool
to be cool - Global Cooling Accelerated By Early Late Eocene
Impacts 35 million
- 16 Aug 2000 SpaceDaily: China Builds
New Observatory To Detect Near-Earth Asteroids.
- 15 Aug 2000 UniSci: Probing Ice Dwarf
Worlds At Solar System's Edge.
- 11 Aug 2000 Science: Tektites
and the Age Paradox in Mid-Pleistocene China - see also a draft article on this subject.
- 11 Aug 2000 SpaceDaily: Students On
Watch Find Space Centaurs.
- 11 Aug 2000 Nature:
Evaporation in the young solar nebula as the origin of just-right'
melting of chondrules - Chondrules are millimetre-sized, solidified
melt spherules formed in the solar nebula by an early widespread
heating event of uncertain nature. They were accreted into chondritic
asteroids, which formed about 4.56 billion years ago and have not
experienced melting or differentiation since that
time. Nature 10 August 2000 (reg'd required).
- 11 Aug 2000 Space.com: Perseid
Meteor Shower Peaks This Weekend and Meteor
Showers and Shooting Stars: A Primer. In the year 2126, the
Perseids' parent comet, Swift-Tuttle, is predicted to return. On this
pass of its orbit, it is expected to come very close to Earth.
Because comet orbits cannot be predicted exactly, there is a small but
significant danger that 126 years from now, Comet Swift-Tuttle
will hit the Earth directly
- 10 Aug 2000 New Scientist: Taking
- Nick Pidgeon wonders why people are so bad at weighing up
the most crucial factor that dictates how people judge risk is trust.
experts claim that a mistrust of expertise and risk management is now a
feature of industrialised societies.- some lessons for Spaceguard?
- 10 Aug 2000 Space.com: Comet
LINEAR's Remains Caught by Four Telescopes.
- 9 Aug 2000 NASA: Bigfoot on Eros (or a
giant paw print)?
- 8 Aug 2000 Space.com: Killer
Asteroid Hunt Reaches a Milestone.
- 8 Aug 2000: HUBBLE DISCOVERS
MISSING PIECES OF COMET LINEAR (NNN), Also Spaceviews.(UT)
- 7 Aug 2000 Space.com: Project
Hera: Triple-header Asteroid Probe - proposed Discovery mission.
- 7 Aug 2000: COMET LINEAR: GOING,
GOING... BUT NOT QUITE GONE!
- 6 Aug 2000 Discover: The Panther
Mountain (impact) Crater - in New York state.
- 5 Aug 2000 Space.com: Comet's
Fragility Shocks Scientists.
- 4 Aug 2000 SpaceDaily: When Do
Asteroids And Comets Become One And The Same.
- 4 Aug 2000 Chicago Sun Times: Last missing
asteroid, Albert, is spotted again. Lost in 1911!
- 4 Aug 2000 Space.com: Hopping
Rover: Bound for New Asteroid in 2002. - Australia is the
target for the sample recovery mission. Also NASA: MUSES-C now
to be sent to asteroid 1998 SF 36.
- 1 Aug 2000 NASA: Comet
LINEAR continues to disintegrate and could disappear completely within
- a few
- 28 Jul 2000 SpaceDaily: Down-to-Earth
Engineering Makes Highly Sensitive Star Wars Telescope Possible.
- 28 Jul 2000 NASA: Hubble Sees Comet
Linear Blow its Top. Also JACOBUS KAPTEYN
TELESCOPE OBSERVES THE DEATH OF COMET LINEAR.(NNN) + NASA
Science News, Yahoo.
- 27 Jul 2000 Space.com: Report:
Gold Meteorites Bombarded Young Planet Earth. "According to
results, the gold in your jewelry can be viewed as a relative latecomer
- 26 Jul 2000 Space.com: Rock
That Damaged Car Was Meteorite.
- 25 Jul 2000 ABC: Evidence
of a Mass Extinction - claims the Permian extinction was sudden - there
are two key theories for what likely caused the extinction. One is that
an asteroid or comet hit Earth. The other, more likely (!) possibility
that gigantic volcanic eruptions in Siberia...More
on the impact/volcano debate.
- 25 Jul 2000 SpaceDaily: Dust, Rocks,
Meteorites And Other Debris - conference in Chicago in late August.
- 24 Jul 2000 The Times: BEWARE:
THE NEXT GIANT ASTEROID BELT IS OVERDUE (CC) - note that with a Poisson distribution we are never
'overdue' for an impact but the other warnings in the article are quite
real. Also at Foxnews.
- 22 Jul 2000: ISDC
2001 Conference(24- 28 May 2001, Albuquerque, New Mexico) will be
covering the threat from NEOs. Contact Andy Smith <email@example.com> for more
- 22 Jul 2000: NEW
OUTER SATELLITE OF JUPITER DISCOVERED (by Spacewatch!) (NNN)
- 21 Jul 2000 TPS: Get
Ready for Comet LINEAR This Weekend !
- 21 Jul 2000 NASA: Near impage of the day
- the equivalent of 'Meteor Crater' on Eros.
- 20 Jul 2000 Space.com: Photogallery of
impact craters on Earth.
- 18 Jul 2000 Boston Globe: Astronomical
find - Teacher's typo points him to an asteroid + some links from
Daniel Fischer: a report from
the discoverer , a
page from German asteroid observers on 2000 NM, a nice light curve
TPS Story + GAIA:
Some Scientific Spin-Offs (CC)
- 18 Jul 2000 Space.com: Spacewatch
Scans the Heavens for Killer Rocks
- 15 Jul 2000: Tips for
observing Comet Linear
(UT) - from Sydney it will only scrape the horizon! S&T
Finder Charts - on August 20 it will pass near
Sombrero Galaxy and might be visible from Sydney.
- 15 Jul 2000: Meteoroids
2001 Conference details (Sweden - Aug 2001) (CC)
- 13 Jul 2000 NASA: Near-Earth
Asteroid Sample Return Workshop (Conference announcement - Dec 2000)
- 13 Jul 2000: Space
Protection of the Earth - 2000 (Conference announcement - Sep 2000)
- 13 Jul 2000 Yahoo: U.S.
Ponders Next Move on Missile Defense. (CC)
- 13 Jul 2000 Florida Today: VERY
BIG BOMBS & ROCKETS: ARMAGEDDON FOR REAL (CC)
- 13 Jul 2000 NASA: Comet
Borrelly or Bust.(NNN)
- 13 Jul 2000 NASA: Galileo
Discovers New Impact Crater On Europa.
- 30 Jun 2000 Nature: Life, but not
as we know it - mentions the mechanism of exchange
of life-bearing materials between planets via meteorites.
- 30 Jun 2000 NASA: Near-Earth
Asteroid Sample Return Workshop December 11-13, 2000, Houston, Texas
- 30 Jun 2000 The Guardian: It
came out of the sky - by Duncan Steel (NNN)
- 27 Jun 2000 Irish Times: It
is a dangerous place out there.
- 24 Jun 2000 SpaceViews: Study: 900 Large
Potentially Hazardous Asteroids. Also EENand
- 23 Jun 2000 Cornell Uni: U.S.-EUROPEAN
TEAM MAP ASTEROIDS, SOME OF WHICH COULD THREATEN EARTH (CC)
- 23 Jun 2000 Nature:
Optical detection of meteoroidal impacts on the Moon (registration
- 23 Jun 2000 SpaceDaily: Finding A New
Lease On Life In Deep Space. The spacecraft is (literally) back on
track for an encounter with Comet Borrelly.
- 22 Jun 2000. Been away on a business trip - just catching up
with the news!
- 9 Jun 2000 BBC: A
meteorite worth its salt.
- 9 Jun 2000 The Guardian: The
dog star's bone? by Duncan Steel (CC) "With its dog bone shape,
Kleopatra has the most unusual shape we've seen in the solar system,"
- 6 Jun 2000 Space.com: Comet
Hale-Bopp May Have Formed Near Neptune and Rare
Rocks: New Lunar and Martian Meteorites Found.
- 6 Jun 2000 The Observer: Asteroid
trackers plan to avert Armageddon (CC)
- 3 Jun 2000 Infobeat: Study
Backs Quick End of Dinosaurs.(CC)
- 3 Jun 2000: Australian ABC Radio's Science Show - Nanobes,
Diamonds (from asteroid impacts) and Core
- 1 Jun 2000: Largest
meteorite find in Canadian history. (NNN)
- 31 May 2000: Eros
is relic of solar system's birth - Cornell Uni (NNN) In Eros we
are seeing the ratios of silicon, magnesium and aluminum -- produced
from the cloud of gas from which planets condensed -- all basically
preserved as they were in the solar nebula. Comment: Although
these findings do not indicate that Eros preceded the formation
of the solar nebula, should we be questioning the concept that only
dust and clouds of gas are produced by supernova?
In such a huge explosion is it possible that a very small proportion of
matter forms into 'solid' clumps (perhaps when multiple shockwaves pass
the 'cloud') and that these clumps are the source of some asteroids and
material for planets? Yahoo.
- 30 May 2000 SpaceDaily: Ancient
Meteorite Hints At Sol's Birth.
- 24 May 2000: HAS JUPITER
FLASHED BEFORE? Comet impact on Io in 1983? (CC)
- 24 May 2000: SHIELD:
A Comprehensive Earth Protection System - a 1998 proposal and final
- 23 May 2000 Space.com: Astronomers
Call for New Space Observatories - A team of leading U.S.
astronomers wants NASA to spend $3.7 billion during this decade to
build and launch
a series of new space-based observatories - but it looks like not a
cent in it for Spaceguard! Also BBC.
- 20 May 2000 SF Gate: Scientists
touch gems older than solar system. Also Larry Nittler's explanation.
- 19 May 2000 The Times:
'Invisible' comet too close for comfort. [SOHO observed ]five
comets which crossed the SOUTHERN SKIES in 1997. Four of
them had been seen by ground-based observers BUT ONE PASSED BY
UNRECORDED. An example of the consequences
of closing down the Australian search program in 1996. Also
Space.com and SpaceDaily.
- 18 May 2000 Space.com: NASA
tries to revive comet-chasing craft.
- 13 May 2000 Space.com: Astronomers
Find Lost Asteroid. Also MPC
- 12 May 2000: New Scientist: One giant leap
- An asteroid probe that can jump could leave crawlers standing
- 10 May 2000: List of NEO
follow-up observatories started.
- 4 May 2000 JHU: First image of
Eros by NEAR-Shoemaker in low orbit. - is that someone's
- 4 May 2000 Spaceflight Now: Were the
dinosaurs fried by ultraviolet light? - Chicuxlub impact probably
destroyed the ozone layer (NNN). See also Did
Asteroid-Induced Firestorm Destroy the Dinosaurs?
- 3 May 2000 Space.com: Experts
Demand Better Asteroid Alert - airbursts from small impacts may
- 2 May 2000 Space.com: High Dollar Space
Rocks Inspire Wonder, Devoted Collectors.
- 1 May 2000 Space.com: NASA Craft Finds
Possible Tar in Stars - Preliminary measurements of
interstellar dust particles encountered by NASA’s Stardust spacecraft
indicate the surprising presence of large tar-like molecules (see Prospecting
- 30 Apr 2000 Space.com: Bigger
telescopes seek killer asteroids. Also Next:
Space-Based Telescopes for Asteroids? Status of Spaceguard Survey -
by the end of 2000 several new telescopes will put the goal of
90% of large NEAs within our grasp.
- 30 Apr 2000 Mercury Centre: Earth
owes Jupiter huge debt Jupiter's massive gravity acts as
shield, sheltering Earth from most of the roving comets and asteroids(NNN)
- 21 Apr 2000 Discovery: Killer
Crater Found (Woodleigh - see 15 Apr). Somehow dinosaurs
have even got into the story! Space.com
have it correct.
- 15 Apr 2000 CCNet: DISCOVERY OF
FOURTH LARGEST IMPACT - Western Australian "Woodleigh impact
might be a 120km crater that coincides with the extinction of
360 million years ago. Also in Western Australia is the speculative Bedout
impact structure - a 250km wide crater that may coincide with the
massive Permian/Triassic extinction. Crater/extinction
updated - the correlation is looking remarkable!
- 12 Apr 2000 SpaceDaily: China's Antarctic
2000 Expedition Finds New Meteorite Field.
- 12 Apr 2000 Yahoo: U.S.
Scientists Urge Against Missile Defense System - a system to defend
against hostile missiles, not asteroids. The Pentagon estimates it
cost at least $30.2 billion. Could we have just 0.3% of
to build and run a global Spaceguard system for 10 years!
- 6 Apr 2000 Yahoo: Ulysses
Spacecraft Catches Biggest Comet Tail. (based on Nature article).
- 5 Apr 2000 CNN: LUNAR
GLASS GATHERED 30 YEARS AGO STILL USEFUL (UT)
- 5 Apr 2000 ABC: Defending
Our Planet - Arizona Observatory Forms Main link In Earth Defense
- 5 Apr 2000 Time: Will
a Killer Asteroid Hit the Earth? (NNN). Also CNN.(CC)
- 30 Mar 2000 Times: On British Satellite TV tonight -
IMPACT, National Geographic, 10pm. Thankfully, these
scientists believe that, if spotted early enough, these asteroids
could be intercepted and destroyed, saving the world from
impending doom. Let's just hope that they are right.
- 30 Mar 2000 CCNet: PAOLO FARINELLA (1953 - 2000) - Paolo
Farinella was one of Europe's leading asteroid experts. His impressive
and wide-ranging list of resesarch papers on the nature of
asteroids and their potential to threaten our Earth documents
his involvement in and enormous influence on the NEO research community
since the early 1980s (Benny Peiser).
- 29 Mar 2000 PSR: Supernova
Debris in the Solar System.
- 29 Mar 2000 SpaceDaily: TRW To
Upgrade GEODSS - The Ground-Based Electro-Optical Deep Space
(GEODSS) tracks satellites...will develop a camera subsystem for the
based on state-of-the-art Charge Coupled Device technology, which
the sensors to see dimmer objects. (GEODSS technology is also
for NEO searches).
- 25 Mar 2000 NASA: New Orbit Visualization Tool
Online - an interactive 3D orbit viewer written in Java, and you
can view the orbit of any asteroid or comet. You can rotate the
orbits around and zoom in, move around the solar system and "play" the
orbits backwards and forwards like a movie.
- 25 Mar 2000 CCNet: PERIODICITY IN
THE TERRESTRIAL RECORD by Bill Napier
- 24 Mar 2000: Watch out for the May 2000 issue of Scientific American - it will have an
special on asteroids.
- 24 Mar 2000 NASA: Marshall
Engineers Undertake Real-Life ‘Mission’ To Protect NASA Spacecraft,
Crews in Event of Damage - The kit, intended for use on the
International Space Station, is designed to seal punctures up to 4
inches in diameter
caused by collisions with small meteoroids or space debris.
- 22 Mar 2000 BBC: Earth's
close shave - asteroid 2000 EW70 will come within about 1.9 million
kilometres of the Earth today. More details at The Cosmic
Mirror and MPC (CC).
- 18 Mar 2000 Space.com: Canada's
Dirty Little Secret - Yukon meteorite and Pristine
Yukon Meteorite A Rare Find. Also Discovery.
- 18 Mar 2000 ABC: The
Theory of Unlimited Oil. (see also Prospecting
for Oil? Look in asteroid impact craters)
- 11 Mar 2000 Space.com: NASA
Draws Up Big Booster for Mars - it might also prove useful for chasing
comet and asteroids! +Saturn
5 Blueprints Safely in Storage.
- 11 Mar 2000 SpaceDaily: Apollo
Lunar Rocks Reveal Importance Of Impact Events On Evolution -
tektites give an indication of major cratering episodes, including an
increase over the past 500 million years. UC
Press release.(CC) Also BBC,Space.com
- 8 Mar 2000 SpaceFlight: SpaceDev
plan to take commercial photographs of asteroids.
- 6 Mar 2000 ABC: Tools
of the East. A meteor that slammed to Earth near the
Chinese site provided the exact dating of the tools and the raw
materials for their manufacture. Based on an article from Science,
Mar 3 2000 Volume 287
Number 5458: Mid-Pleistocene Acheulean-like Stone Technology of the
Basin, South China. One of the authors, Rick Potts, was interviewed
the Australian ABC radio program The Science Show. He described the
effects of the asteroid impact and the changes that the local human
would have had to cope with. Also at MSNBC, NPR
- 3 Mar 2000 The Why Files: Colossal
cataclysm -- facing the asteroid threat - includes comment on the
AAAS paper and my simulation. Also covered in the March issue of Astronomy Now
- 1 Mar 2000: Abstracts for the Lunar & Planetary Science
Conference to be held this month are available from LPI. See also
my brief selection of abstracts.
- 1 Mar 2000 Space.com: Russians
May Hoist Europe's Solar Sail. (see also Non-Nuclear
deflection of asteroids)
- 29 Feb 2000: Japan Spaceguard
underway! On January 26, 2000, a new NEO/ Debris 0.5m telescope
was set-up at the Bisei Spaceguard Center in Okayama Prefecture of
Japan. It is still under a phase of improvement of image quality, but
we have started to observe NEOs and Space Debris. Some pictures during
its set-up can be seen in my primitive
homepage http://neowg.mtk.nao.ac.jp/.Another 1m telescope is scheduled
be set-up in August or September. Syuzo Isobe (CC).
- 26 Feb 2000 MSNBC: Adding up the risks of
impact: Researchers turn attention to smaller, more frequent blasts
(interview with Benny Peiser and David Morrison).
- 26 Feb 2000 MSNBC: Probing meteorites for
- 26 Feb 2000 SpaceDaily: Astronomers
Go Airborne To Catch A Passing Asteroid.
- 26 Feb 2000 Space.com: Astronaut
Sees the Asteroids as 'Stepping Stones'.
- 25 Feb 2000 Coverage of Benny Peiser's AAAS talk: Discovery.com,
- 23 Feb 2000 Space.com: Aerogel:
Stardust's 'Butterfly Net' - mission to catch dust from a comet.
- 23 Feb 2000 Space.com:(Claims of) Fossilized
Bacteria Found in Ancient Meteorite. References
- 18 Feb 2000 Space.com: Many
pennies from heaven - Nickel from the Sudbury impact in Canada
generates $3 billion per year.
- 17 Feb 2000: Benny Peiser to give a
talk about impacts over the last 10,000 years. AAAS Annual
Meeting. More details of the simulation
that Benny used in his talk. See also items on 25 & 26 Feb.
- 17 Feb 2000 Fox News: Are deadly
- 16 Feb 2000 Space.com: Defending
the earth: Fact Vs Fiction by Michael Paine. Deflection
- 15 Feb 2000 NASA: NEAR Begins
Historic Orbit Around Eros At 11:00 a.m. Eastern time,
navigation data from the Near Earth Asteroid Rendezvous spacecraft
indicates NEAR has achieved orbit around asteroid 433 Eros. Also
- 14 Feb 2000: NEAR Captures
Eros' Heart - stretch the imagination and this feature looks like a
is due to go into orbit around Eros at about 2.30am Tuesday morning,
- 12 Feb 2000: Science
Tsunami Hazards - Vol 17, No 3 now available as a 9.6Mb PDF file.
2 and 3 are described in these abstracts and
several asteroid papers.
- 12 Feb 2000: Cassini
images of asteroid 2685 Masursky - unexpected composition revealed.
- 12 Feb 2000 Space.com: Kamikaze
Comets Don't Stand A Snowball's Chance In Hell - SOHO discoveries.
Also at NASA
Space Science News.
- 12 Feb 2000 MSNBC: FAQ about asteroids.
- 10 Feb 2000 NASA: Eros or
bust - description of NEAR science.
- 10 Feb 2000 ESA: 100
and counting: SOHO's score as the world's top comet finder. (CC) For
the great Comet Hale-Bopp the rate [of water vapour
release] reached 20 million tons a day and [SOHO's] SWAN watched its
hydrogen cloud grow to 70 million kilometres -- by far the
largest object ever seen in the Solar System.
- 10 Feb 2000 Spacedaily: Early
Alert on Comets and Asteroids Gets Even Faster. MPC's computer gets
upgrade. Brian Marsden has a big smile! (CC)
- 9 Feb 2000 BBC: Meteorite
reveals deep secrets.
- 9 Feb 2000: CCNet: ASTEROID 2000
BF19: ALL-CLEAR. From Andrea Milani: I can announce that, with
the new observations from McNaught (Feb. 7) and the data from Scotti of
Feb.1 and Feb.5, which were previously not available (and I would like
to know why; please do not remove this comment), the orbit of 2000 BF19
is incompatible with an impact in 2022. Once again Australian
observations (Rob McNaught) were crucial to assessment of the
threat. Press release.
- 9 Feb 2000 Space.com: Should
military micro-satellites hunt down asteroids?
- 8 Feb 2000 CCNet: ANOTHER
POTENTIAL IMPACT COURSE DISCOVERED. 2000BF19 is in a resonant orbit
the Earth and there is a very slight chance it will pass
keyhole in 2011 that leads to a collision in 2022. The object is
probably about 500m in diameter. Follow-up observations are crucial.
- 8 Feb 2000: Interview with
David Raup about mass extinctions (CC)
- 8 Feb 2000: A REVIEW OF COMET AND ASTEROID STATISTICS by
PLANETS AND SPACE, 1999, Vol.51, No.11. The statistics of
Earth-approaching asteroids are first summarized, and an enhanced
frequency of objects smaller than 100 meters is noted...With the new
equipment coming on line, we are
beginning to see that the global hazard will be mostly quantified
within a few decades. We do see a shortage in astrometric
follow up fainter than about the 20th magnitude. (CC)
- 4 Feb
2000 SpaceDaily: Robot
Finds Meteorites In Antarctica.
- 4 Feb 2000 NASA: NEAR image of Eros
shows small crater. SpaceDaily: NEAR
Brakes For Rendezvous With Eros. Also Space.Com.
- 3 Feb 2000 BBC: Supervolcanoes
could trigger global freeze. Effects and frequency are very similar
to thise of a large NEO impact.
- 3 Feb 2000 MSNBC: Lovely new images of an
asteroid. NEAR approaches Eros.
- 2 Feb 2000: SPACEDEV
AND BOEING TEAM ON COMMERCIAL DEEP-
SPACE MISSIONS - Lunar, Mars and Asteroid Missions to be Assessed.
SpaceDev, Inc. (OTCBB: SPDV), the world's first commercial
space exploration and development company, and The Boeing Company
the world's largest aerospace company, announced today that they have
together to investigate opportunities of mutual strategic interest in
commercial deep-space arena...
- 1 Feb 2000 JPL: New Mars Meteorite Found In
California. Also BBC.
- 1 Feb 2000 BBC: FIREBALL
DEBRIS FOUND IN IRELAND (CC)
- 1 Feb 2000: FOSSILISED
BACTERIA FOUND IN METEORITES, RUSSIAN SCIENTISTS CLAIM.(CC)
See also a 1997 report FOSSILIZED
LIFE FORMS IN THE MURCHISON METEORITE.
- 29 Jan 2000 Space.com: Yukon Meteor
Flash Caught on Film.
- 28 Jan 2000: NASA NEO Office updates its NEO count and observatory
- 26 Jan 2000 Nature: Eyes
wide shut - David Jewitt's article about the lack of a global NEO
- 26 Jan 2000: Antartic
robot finds its first meteorite.
- 26 Jan 2000 Space.com: How
comets might seed planets.
- 25 Jan 2000 BBC: Top
gun astronomers spy asteroid - astronomers take instruments
aboard fighter planes.
- 25 Jan 2000 Space.com: Germs
From Outer Space! Researchers Say Flu Bugs Rain Down From Beyond.
- 25 Jan 2000: NASA
aircraft tries to collect meteor data over Canada. Yukon event -
see 20 Jan (CC).
- 25 Jan 2000: New NEAR movie
- but the best is yet to come!
- 24 Jan 2000 CNN: Ancient
Earth wobble slightly shifted poles. Hypothesis, based on magnetic
measurements of volcanic rocks, that the Earth shifted on its axis
slightly 85 million years ago. In case you are wondering, this does not
appear to align with any
major known impact event.
- 22 Jan 2000: Spaceguard
Foundation Annual Report.
- 22 Jan 2000 Space.com: Can
Space Rocks Beat Wall Street Stocks? - the trade in meteorites.
- 20 Jan 2000 Excite: Meteor
explodes in air near Alaska, Yukon border. (NNN)
- 20 Jan 2000 BBC: Robot
hunts for space rocks (in Antartica). Also
Spaniards dodge mystery ice (possibly chunks of comets - but
- 19 Jan 200) NASA/JPL: NEAR
on asteroid Eros - Feb 14 encounter (Valentines Day!). First images.(the
- 14 Jan 2000 AAS meeting abstracts: A
Progress Report on the Lincoln Near Earth Asteroid Research
of Potentially Life-carrying Meteoroids from One Planetary System to
- 13 Jan 2000 BBC: No
escaping asteroids - Nature item about a lower estimate of the
number of 1km+ asteroids. Space.com Asteroid
Hunters Downgrade Overall Threat to Earth. Also at Foxnews
- 10 Jan 2000 Explorezone:
Simulations of impacts - the latest Rocks
from Space . Nature
abstract and feature
of the week.
- 7 Jan 2000 CCNet: Call for papers for IMPACT2000
Conference, Vienna, July 2000. Also Third International Conference
'SPACE PROTECTION OF THE EARTH - 2000'. "SPE-2000" which will be held
in Crimea in
Evpatoriya city on September 11-15, 2000. No website at this stage but
is A.V. Zaytsev
- 7 Jan 2000 CCNet - Essay: Thoughts at the
start of a new Millennium by Brian Marsden
- 5 Jan 2000 Space.com: New
Panel's Task: Asteroid Watch! - Tony Blair's government
unveiled a panel of three wise men to examine the threat of
collision with what it called Near Earth Objects (NEOs). See also BBC
item about the panel and Saving
the world from asteroids. Also this November item.
Times (UK). Even Time
- 31 Dec 1999 BBC: Bugs
in Space "Astrobiologists are to test whether life from Mars could
have survived a journey to Earth by hiding inside meteorites..."
- 29 Dec 1999 Space.com: Yucatan
Crater May Harbor Clues to Dinosaur Extinction.
- 23 Dec 1999: The paper CONTEMPORARY
ASSESSMENT OF TSUNAMI RISK AND IMPLICATIONS FOR EARLY WARNINGS FOR
AUSTRALIA AND ITS ISLAND TERRITORIES by Rynn and Davidson is now available in PDF format
a 7.6Mb file for Vol 17 No. 2). See my review.
- 23 Dec 1999 New Scientist: The
right stuff (URL no longer works - you can pay to see the
archive!)- the risk to astronauts involved with
the International Space Station: "...the chances of losing the
station in any 8-month period lie
between 1 in 200 and 1 in 500--meaning there's a 5 to 10 per
cent chance of disaster over 15 years. But its calculations suggest
this happens, there is a 93 per cent probability that a micrometeorite
impact will be the cause. Futron assumes just a 2 per cent chance
fires, explosions or collisions between spacecraft would be to blame."
- 18 Dec 1999 PSR: Melting
experiments on oxygen-depleted meteorites give clues about magma
compositions and core formation in asteroids.
- 18 Dec 1999 SpaceDaily: No
Evidence For Mini-Comets. See also Iowa Uni Small Comets.
- 14 Dec Explorezone: Prospecting
for Oil? Look in asteroid impact craters - by Michael Paine
- 13 Dec 1999 SMH: Geminid
meteor shower peaks tonight.
- 10 Dec 1999 Sydney Morning Herald: There's
an alien in Guyra's drink and More
UFO sightings lights up NSW skies. (possible meteorite hits a water
supply dam in the Northern NSW town of Guyra).
- 8 Dec 1999 U.S.News A little
less to worry about from on high - estimate of the number of 1km
reduced. See also news archives for
Jul 1999. (CC)
- 7 Dec 1999 Albuquerque Journal :Geologist
Pursues Asteroid Impact - in South Africa - what might be one
largest impact craters on Earth. (CC)
- 5 Dec 1999: Just received my copy of a new book by Planetary
Scientist John Lewis "Comet
and asteroid impact hazard on a populated Earth". It includes a
diskette with a Monte Carlo program to run simulations of Earth impacts
over time. The book is basically a handbook for the software with a
wide range of physical information about NEOs, impacts and effects on
the human population. An excellent resource covering physics, chemistry
and environment . My own rough
estimates of human fatalities may prove too optimistic. Note
that the program requires GW-BASIC to run (if all else fails a copy of
BASIC.EXE (GW-BASIC) can be downloaded from here). To
run the program in a higher version of BASIC such as Quick Basic you
will need to convert it from binary to ASCII format from within
To do this load the program in GW-BASIC (F3 "path/filename") then save
with the ASCII option set (F4 "path/new_filename" , A ). Review.
- 30 Nov 1999 The Sunday Times: Britain
plans Armageddon centre as comet shield also BBC.
See our press release.
- 30 Nov 1999: New
Scientist: COSMIC IMPACTS & THE MYSTERY OF THE MISSING
(20 Nov issue) - copy at CCNet
- 27 Nov 1999 BBC: Lunar
link to volcanic past - a theory that tidal effects within the
Earth's crust may have caused some lava eruptions.Would it survive Occam's razor? - a large comet or asteroid
impact seems more plausible. Comet Hale-Bopp would have done nicely
(see 24 Nov)!
- 27 Nov 1999 PSR: Purple
salt and tiny drops of water in meteorites - "...as old as the
- 25 Nov 1999 ScienceNow: Drowning
in Asteroids (subscription required). Background
on this issue.
- 24 Nov 1999 CCNet: Abstracts from
the latest issue of Earth Moon and
Planets cover research on comet Hale-Bopp. The nucleus is estimated
to be between 46 and 70km in diameter. Possible satellite also
covered by Explorezone.
- 21 Nov 1999 Space.com: Astronomers
Report On Strange Double Asteroid.
- 19 Nov 1999 Space.com: Did
Asteroid-Induced Firestorm Destroy the Dinosaurs? by Michael Paine.
- 19 Nov 1999: Leonids - after the storm
- 13 Nov 1999: Minor Planet Centre 200th
Potentially Hazardous Asteroid added to list
- 12 Nov 1999: Nature Compaction
as the origin of the unusual craters on the
Mathilde - (abstract) highly porous asteroids are minor
contributors of meteorites, because essentially no material escapes the
asteroids. More at Inscight
- 10 Nov 1999: BBC Distant
Kuiper Belt Object detected. (NNN)
- 9 Nov 1999: European conference on the impact threat - AMICO 2000,
Germany, May 2000.(NNN)
- 9 Nov 1999: NASA Mars Global Surveyor - very
clear pictures of a Martian impact crater. (NNN)
- 9 Nov 1999: Your
ancestors may have been Martian extremophiles - my latest
- 8 Nov 1999: Cornell Uni offers schools participation
in the NEAR asteroid mission (NNN)
- 8 Nov 1999: Space.com new page
- including my Exploezone articles
- 4 Nov 1999: Explorezone Torino
Impact Hazard Scale reviewed. 10 Nov: Follow
up comments by Brian Marsden. See also Michael
Paine's comments back in April and notes about the chances
of Spaceguard detecting an Earth-threatening object.
- 3 Nov 1999: LPL Crater
"calculator" for determining impactor or crater characteristics
(tip: stony asteroid density is around 3000 kg/m3 or
- 2 Nov 1999: Space.com Creating
the Model Comet - in order to avoid a repeat of Deep Space 1's
failure to take close up images of Asteorid Braille, NASA is looking at
better predict the surface features of comets and asteroids.
- 27 Oct 1999: Spacedaily The
Challenge of Space Mining (posted 14 Sept) and The
Solar Trojans of Earth
- 26 Oct 1999: The Leonids Meteor storm is coming
- 20 Oct 1999: Minor Planet Centre has a list
of asteroids named after rock n roll musicians!
- 20 Oct 1999: In my "Riches
from the rubble of the solar system" Explorezone article I wrote
about the potential for steam powered rockets and mining the propellant
from Near Earth Asteroids. Here is a UniSci news item
a new satellite propulsion system that uses components similar to those
a microwave oven: "In recent tests, Micci operated the system using
nitrogen, helium and ammonia as propellant gases. The thruster can also
potentially be operated with water as propellant."
- 15 Oct 1999: Graph of crater ages and
geological boundaries webpage added.
- 15 Oct 1999: Tunguska
expedition press release and abstract of paper
- 14 Oct 1999: Australian ABC News Australian
skywatchers join search for deadly asteroids - includes a Real Time
clip from the TV News item (based on the Lateline program). An update
our 10 Sept item.
- 11 Oct 1999: Explorezone How
an asteroid impact causes extinction
- 8 Oct 1999: Quote from NASA's Spacewarn
Bulletin 550: The encounter phase of the Deep Space 1
(1998-061A) spacecraft with the kilometer-sized asteroid, Braille, was
only a partial success. The camera was not oriented correctly to obtain
images of the asteroid close up.
However, the orbital parameters of the asteroid determined during
cruise phase has indicated that the asteroid will probably enter an
Earth orbit and soon burn out in the atmosphere in a few thousand years.
(Robert Clements).[Note: this description seems a little odd - treat it
- 8 Oct 1999: CCNet New observations
of asteroid 1999 RM45 made by Australian astronomer
Rob McNaught now provide a 21-day arc of orital data
which practically rule out any impact risk for the next five decades. See
our press release
- 8 Oct
1999: Space Daily (NNN)
- 7 Oct 1999: BBC Possible
huge 10th planet amongst the Oort cloud. Also Explorezone.
- 7 Oct 1999: Explorezone Moon
found around asteroid - Eugenia has a tiny moon. Pictures.
- 6 Oct 1999: Asteroid 1999 RM45 added to the Earth Impact
Possibilities List (update: now deleted from list - see above) -
estimated risk less than 1 in 100 million but more observations are
needed to pin down the orbit (CC). See also Explorezone.
- 6 Oct 1999: Explorezone RETURN
OF THE LEONIDS: GREATEST SHOW IN THE SKY
- 27 Sept 1999: Physical Review Focus Earth's Peculiar Neighbors - possibly a new class of NEOs
orbits (NNN). See image.
- 25 Sept 1999: Sydney Morning Herald Harvest
of the heavens starts with a sludgeball on Earth - simulating
at Wollongong University (CC)
- 24 Sept 1999: Explorezone has a report on an analysis
of the geology of the Mars Pathfinder landing site. The article
concludes that the most likely explanation for small crater-like
depressions and cracks in many rocks is meteorite impacts. "Prior to
our observations most folks subscribed to atmospheric entry
models that stated that the smallest projectiles that could
reach Mars would make craters some 50 meters across," Horz said, adding
that the new study shows that more numerous small objects, capable of
creating craters as small as a few centimeters across, are
possible...Impact provides an efficient erosion process and explains
the wide variety of boulder and pebble-sized rocks that litter the
surface." Update from Explorezone: We
know that Pathfinder landed on a flood deposit and therefore it seems
much more likely to me that these features and rock fragments are from
the flood(s) that flowed across this region of Mars and not impact
James W. Rice, Jr. is a geologist at the Lunar and Planetary Laboratory
University of Arizona. He is a team member of the Mars Polar Lander
Surface Stereo Imager and Robotic Arm Camera).
Sept 1999: The Planetary Sciences Research Institute has a list of impact-related conferences.
For example: Current studies of the most profound extinction event
in Earth's history, at the end of the Permian, indicated a much shorter
time frame for this event than earlier data had suggested, with
significant associated geochemical anomalies. The cause for this global
catastrophe is currently unknown, but speculations center on massive
volcanism or cometary impact. Other boundaries and short-term events
(e.g., late Devonian, Triassic-Jurassic, late Eocene) in the
stratigraphic record of the Earth are now receiving unprecedented
attention. Thus, we feel that the time has come to summarize and
current state of knowledge of the character and causes of mass
extinctions and catastrophic events in the history of our planet.
- 21 Sept 1999: Scientific American What
causes a meteor shower?
- 21 Sept 1999: Explorezone Amateur
asteroid hunters part of new golden age of astronomy - New Zealand
- 20 Sept 1999: The November Leonids
meteor shower is back in the news! Rob McNaught and David Asher
have analysed the stream and predict that 1999 and 2000 will produce
exceptional showers, in the range of 1,200 meteors an hour for Europe
and the Middle East.
- 18 Sept 1999: New book by Planetary Scientist John Lewis Comet
and Asteroid Impact Hazards (CC). Also available from Amazon
- 17 Sept 1999: BBC
Small but deadly comets identified - A "small" comet impact on
Earth is the most likely
extraterrestrial object to kill millions of people and it
happen at any moment, according to a British expert. ("small"
asteroids are also a problem)
16 Sept 1999: Lateline transcripts
and audio now available
- 16 Sept 1999: Daily InScight Killer
Impact's Wet Wallop
- 13 Sept 1999: Explorezone article Asteroids
and tsunami: GOOD NEWS AND BAD
- 10 Sept 1999: After a three year
professional search for Earth-threatening
asteroids will soon begin again in Australia.
Sept 1999: CNN Water
found in 2nd meteorite
- 8 Sept 1999: CNN No trace
of Lunar Prospector crash
- 6 Sept 1999: Australian ABC NSW
telescope to search the skies for earth-killers - A little-used
telescope in the west of New South Wales is about to get a revamp so it
can spot and track earth-threatening asteroids. Rob McNaught is carrying out this project.
- 4 Sept 1999: US science
budget cuts threaten NEO research - CCNet report from Clark
Chapman. If you haven't
already, please lobby the US Congress to reverse this crazy development
is the equivalent of a self-inflicted lobotomy!
- 2 Sept 1999: Australian ABC Observatory
devises new program to monitor space objects - There is
concern that three years after the Australian Government axed a program
to detect near earth objects, there is still no comparable project in
the southern hemisphere.
- 2 Sept 1999: Sormano Astronomical Observatory: Small Asteroids
- 31August 1999: Australian ABC
current affairs program Lateline
covered the lack of a professional NEO search in the Southern
Hemisphere. The program featured a link-up interview with Louis
Friedman from The Planetary Society, Paul Chodas from NASA and Duncan
Steel from the UK. Understandably, the program was highly critical of
the decision, in 1996, by the Australian government to stop funding the
Spaceguard program in Australia. A government representative made a
woeful effort to justify the decision and has obviously been very
informed about: the risk of an impact, the consequences of an impact,
cost of a reasonable search effort in Australia and the feasibility of
an impact, provided that sufficient warning time is available. As
Ducan Steel pointed out, if we don't look for these objects then
we will have zero warning time. Interestingly Louis Friedman favoured
approach that scientists should promote the scientific research
potential of NEOs rather than the dire consequences of an impact.
A transcript of the program is now available from the Lateline
By coincidence, after Lateline the ABC screened a science discussion
program "Life,the Universe and Everything" hosted by Paul Davies. It
was recorded in Adelaide in July and also featured Duncan Steel, who
again made the point about a lack of a professional NEO search in
Tomorrow night the excellent program The Planets will look at the
possibility of microbes transferring between Mars and Earth via
- 31 August 1999: Science item about the composition
- 31 August 1999: Space Frontier
Conference to cover NEOs
- 28 August 1999: For several reports on the IMPACT
conference, held in Turin in July, see this special CCNET
- 28 August 1999: PSR Honeycombed
- 20 August 1999: URGENT PROPOSAL FOR
RADAR OBSERVATIONS OF ASTEROID 1999 JM8 - a NEO several kilometres
- 19 August 1999: British Antartic Survey project proposals
include searching for evidence of NEO impacts (NNN and CC).
- 19 August 1999: San Jose Mercury News Earth
battered through history by comets - "At least five times during
the last 6,000 years, major environmental calamities undermined
civilizations around the world. Some researchers say these disasters
appear to be linked to collisions with comets..." (NNN)
- 18 August 1999: Pssst - wanna buy a meteorite! Falling Stars Inc.
- 17 August 1999: NASA Deep Space 1 Mission Log
- comments on the composition and origin of asteroid Braille and a
description of the planned mission to the dormant Comet
to concerns about funding) (NNN)
- 13 August 1999: NASA Tips
for observing the Perseid meteor shower this week.
- 10 August 1999: Explorezone Riches
in the rubble of the solar system (by Michael Paine)
- 7 August 1999: Science
"Late Miocene Atmospheric CO2 Concentrations and the Expansion of C4
Mark Pagani, Katherine H. Freeman, and Michael A. Arthur Science
Aug 6 1999: 876-879. Concludes there was massive global climate change
between 15 and 10 million years ago but does not seem to consider the
possibility of a major impact - for example the 15 million yr old Ries
crater was probably created by a 1km diameter asteroid. Several other
impacts of this size or larger would have occurred around this time but
the craters would not necessarily have survived to this day (opinion -
based on abstract only).
- 7 August 1999: New Scientist Nine
days that shook the world - a list of major natural disasters: LAKE
ACRAMAN in South Australia is Armageddon for the purist. No other
meteorite impact on Earth has stamped the surrounding rocks with such
unequivocal record of collision, quake, wind, fire and tsunami.
Also mentioned is a landslide-generated tsunami
in Hawaii and the 1815 explosion of Mount
- 5 August 1999:Discovery Channel Great
Balls of Fire - story about Spacewatch
- 4 August 1999: NASA - DS1 image of asteroid
Braille posted. Read the epic story of the
flyby and a report
on the science results. Also CNN
- 4 August 1999: Dr Christian Gritzner has just published a
on the asteroid threat (in German). In 1997 he published a paper
"Human Casualties in Impact Events", WGN, Journal of the IMO
- 3 August 1999: US Government job vacancy SENIOR
SCIENTIST FOR PLANETARY PROTECTION - no joke (but it might refer to
microbes rather than asteroid/comet impacts)!
- 3 August 1999: NASA to hold a briefing on the Deep Space 1
- 1 August 1999: BBC Probe
smashes into Moon - Lunar Prospector impact data now being analysed.
- 30 July 1999: Deep Space 1's asteroid
flyby is technically successful but CNN
reports that the attempt to take pictures failed..
- 29 July 1999: Simulation
of an impact tsunami using a balloon and a bathtub!
- 29 July 1999: BBC Moon
burial for geologist - Gene Shoemaker's ashes are on board the Lunar Prospector that will crash
into the Moon on Saturday (NNN). Here is a picture of Gene in the mid 1960s.
- 28 July 1999: Yahoo Scientists
Warn Of Risk From 'Doomsday' Asteroids (reduced risk) (NNN). Also MSNBC and CNNThe
number of asteroids with the potential for the Earth-crushing
scenario depicted in Hollywood's blockbuster "Armageddon" is half what
was previously thought, a scientist said Tuesday. Note
that the jury is still out on these results - they are good news and
the task of Spaceguard easier but the threat has not gone away.
- 28 July 1999: Yahoo Human
Trip To Water-Rich Asteroid Possible By 2015 (NNN)
- 27 July 1999: Cornell
Uni: Fred Whipple joins CONTOUR
mission team. (Fred, now aged 92, came up with the "dirty snowball"
description of comets) (NNN)
- 27 July 1999: Deep
Space 1 is due to fly within 15km of Near Earth Asteroid 1992 KD (recently
named Asteroid Braille in a TPS contest) tomorrow. More in the Mission Log.(NNN)
- 27 July 1999: Spacedaily Spaceguard
and the Amateur Astronomer by Dr. David James Johnson (ez)
- 27 July 1999: BBC Exploring
century's greatest explosion (Tunguska) (NNN). 99 Expedition
- 26 July 1999: Scientific American, August 1999. Letter to
the Editor about a possible giant impact on Venus 800 million years
- 22 July 1999: MSNBC Scientists rate the
asteroid risks - Richard Binzel's proposal for a risk scale. Explorezone
explanation & NASA PR. There is
even a www.torinoscale.com! MSNBC has added a
Also in Nature
- 20 July 1999: Asteroids,
Comets and Meteors Conference Cornell University, July 26-30, 1999
- includes abstracts. Conference
- 20 July 1999: NASA NEO News Update on Asteroid
1999 AN10 - The asteroid has apparently been discovered on a 1955
sky survey photograph and the resulting updated calculation indicates a
large (~400,000km) miss distance in 2027.
- 20 July 1999: NASA NEO News Spaceguard advocate Congressman
George Brown dies. TPS tribute.
- 12 July 1999: Explorezone Chicken
little was right: the sky is falling by Michael Paine.
- 8 July 1999: NASA Discovery mission "Deep Impact" to
fire a projectile into Comet P/Tempel 1 in 2005. Uni Marlyland site
- 8 July 1999: Discovering Archeaology Chaos
from Above - Did Asteroids and Comets Turn the Tides of Civilization?
- 8 July 1999: CNN Meteor
explodes in sky above New Zealand
- 7 July 1999: BBC Taming
a violent planet - disaster prevention conference with a noticeable
absence of the NEO threat.
- 2 July 1999: Australian ABC Meteor
shower lights up Queensland sky
- 2 July 1999: Uni Arizona press release Asteroid
that Formed Meteor Crater Shock Melted (ez)
- 2 July 1999: ESA displays
model of the Rossetta spacecraft (NASA)
- 30 June 1999: Proposal for more effective recovery of "lost"
Impactors: Search and Destroy
- 29 June 1999: CNN Nanorover
bound for asteroid
- 29 June 1999: BBC item Return
to Tunguska - a report on this year's expedition to the site
explosion over Siberia in 1908.
- 25 June 1999: SpaceDaily item Spaceguard:
Education and the Future by David Johnson
- 25 June 1999: News release
about the possible origin of Hale-Bopp, the 40km diameter comet
that came by us in 1997. Also here
- 16 June 1999: Bad
BBC item No
plans to combat asteroid threat . Shameful response to a question
the House of Lords about European Spaceguard. ...the government took
potential threat of a collision with an asteroid "very seriously", and
it was an issue where a "common international approach was essential"
he said that it was not something for which there were any plans at
present. Lords Hansard
more positive! (CC)
- 12 June 1999: Planetary Society NEO
Grant Recipient Puts New
Camera to Good Use A description of Frank Zoltowski's great work in
the Australian Outback (see also Duncan Steel's comments on 11 June)
- 12 June 1999: A report on the IMPACT
workshop from NASA's David Morrison: "NEA discoveries must be
rapidly followed up
to determine orbits. Many groups, including amateur astronomers, now
contribute to follow-up observing programs. This work is quite
effective, but most of
present observers do not have large enough telescopes to observe
discoveries that reach to magnitude 20.5. Thus as the discovery rate of
increases, there may be a crises in follow-up. We also lack follow-up
in the Southern Hemisphere, which could lead to the loss of many NEAs
that are moving south at the time of discovery." ..."Appreciation of
Although the public is broadly aware of the impact hazard, and there
recently been evidence of increased interest in the U.S. Congress
and the UK Parliament, it appears that the reality of the
hazard has still not been accepted by many decision-makers,
most professionals in the risk assessment profession" (CC)
- 12 June 1999: Joel Schiff from New Zealand writes I have
recently acquired a 0.3m SCT and plan to systematically search for
asteroids and do follow up work from our site here in Auckland. You may
also be interested in my international publication METEORITE!
which appears quarterly (http://www.meteor.co.nz)
- 11 June 1999: The Guardian article Astronomers
search for 2020 vision by Duncan Steel (registration required) - [Asteroid
1999AN10 ] didn't seem important until,after re- emerging from the
glare, it was observed again by an American amateur astronomer living
Australia.(There is no professional tracking team in the southern
The new data indicate this asteroid is particularly dangerous... major
are under way in the US, but they cannot look during daylight hours,
can they see the southern sky. Our front gate may be closed, but the
door is ajar, and our windows wide open.(CC)
- 10 June 1999: July issue of Scientific American has an
Far-Flung Raw Materials - Life may owe its start to complex organic
molecules manufactured in the icy heart of an interstellar cloud
- 9 June 1999: Links to
images of lunar crater Giordano Bruno
added. This 22km diameter crater
on the far side of the Moon was probably created in 1178AD when the
plume was observed by some monks. On Earth a 1km asteroid would
typically create a 20km crater.
- 9 June 1999: Earth Impact
list added to NEODys
There is a remote possibility of asteroid 1998OX4 colliding with Earth
2047. However, the asteroid, about 500m in diameter, was "lost" due
a lack of follow-up observations. Hopefully it will be rediscovered
year (CC). See also Asteroid
- 9 June 1999: Transcript of
(joke) 60 Minutes item about 1999 AN10, aired on 30 May.
- 8 June 1999: Debriefing on the
international Impact Workshop at Turin posted on NASA's NEO News
website. "Discussions emphasised the need for Southern Hemisphere
telescopes", "...urgent need for follow-up programs...". See
- 8 June 1999: Spacedaily item Spaceguard
only looking one way by Dr David Johnson.
- 6 June 1999: Risks to
inhabited regions revised (assumed area of devastation for
asteroids 500m + reduced)
- 3 June 1999: International
Symposium on Planetary Impact Events and their consequences to the Earth.
To be held in Yamaguchi, Japan, September 27-30, 1999. This symposium
has scientific targets to discuss catastrophic events on lunar
formation, impact craters, meteorites, meteoritic showers, geological
boundaries, space debris, new materials,
artificial impacts and life chemical evolution as analyses of space and
circumstances. (NASA's NEO News)
- 29 May 1999: Guardian article There's
gold in them there asteroids by Duncan Steel. (CC)
- 29 May 1999: Impact
Workshop to be held in Italy June 1 to 4. Sponsored by IAU , ESA ,
NASA , ASI , Spaceguard Foundation , Alenia Spazio and The
Planetary Society. (CC)
- 28 May 1999: Press
release seeking Australian funding for Spaceguard
- 27 May 1999: CCNet item DISCOVERY OF A
STREWN CRATER FIELD IN AUSTRALIA POINTS TO MULTIPLE COMETARY
IMPACTS - numerous impacts in the Timor sea about 35 million years
- 27 May 1999: David Morrison reports on the status of NASA's NEO program
(posting imminent, also at CCNET).
Mostly very good news with increased funding, subject to several
big hurdles in
the budget process, and cooperative research with USAF. It is
estimated that 18% of NEOs 1km or larger have now been discovered.
However, the current discovery rate is about one seventh of that needed
to achieve the Spaceguard goal of 90% detected within a decade and it still
lacks a major Southern Hemisphere search effort.
May 1999: MSNBC item Earth’s
close shave with an asteroid.
NASA reduces the odds for a collision with asteroid 1999 AN10 in 2044
1 in 500 000 (CCNet). Update: NASA NEO News. New
Scientist item World's
- 25 May 1999: US Congress triples NASA's budget for NEO
detection.to $10.5 million per year (CCNet). Extract from 2000-2002 budget. The previous
budget allocation was about $3 million per year (see also this extract from 1998-1999 budget and a NSS press
- 25 May 1999: Presentation
to the UK All Party Parliamentary Astronomy and Space Environment Group
by Professor Mark Bailey from Armagh Observatory.
- 19 May 1999: Observations by
Australian-based NEO searcher Frank Zoltowski have caused the Minor
Planet Centre to review the predicted orbit of asteroid 1999 AN10. MPEC 1999-K07
indicates that on 7 August 2027 the 1km diameter asteroid could miss
by as little as 37,000km or 3 Earth diameters. The (generous)
calculated approach distance is 0.01AU or about 1.5 million km. Its
cannot be reliably predicted after such a close approach and it is
to be a threat for hundreds of years. (CCNet). Updates: NASA Press Release
sensationalised story in the Sydney
Morning Herald (21 May). BBC
- 18 May 1999: AMOS Conference in
Hawaii late August 1999 will include a session on NEOs. AMOS is an Air
Force program (tip off via China's SCAP NEO
- 17 May 1999: Estimates of
added to risk assessment.
- 15 May 1999: The UK Parliament's
report Near Earth
Objects is available in PDF format. It includes criticism of the
lack of a southern hemisphere
search effort. The report lists our Tsunami
page as a "particularly useful" resource (tip off from Duncan Steel).
- 14 May 1999: Exploratorium special The Sky is
- 13 May 1999: ESA Press Release From
Near Earth Asteroids to water on Mars - astronomers review latest ISO
results. The Infrared Space Observatory (ISO) is an astronomical
satellite that was operational between November 1995 and May 1998. (JPL
- 10 May 1999: A rundown on the 30th Lunar and Planetary
Science Conference is available from PSR
Discoveries - Mars meteorite and much more. Copies of papers, in
format are available from LPI
- 10 May 1999: Estimates of impact risk
to inhabited regions of the Earth posted.
See also Spaceguard's chance of
detecting an Earth impactor.
- 8 May 1999: NASA TV shows "Awesome Asteroids"
Comets" now available in Quicktime format (several megabytes each).
- 8 May 1999: Emergency Management Australia AUSTRALIAN DISASTER
CONFERENCE 1999: DISASTER PREVENTION FOR THE 21ST CENTURY 1-3 Nov,
1999 - call for papers (MJ). A good opportunity to raise the impact and
- 6 May 1999: AAO Astronomer Ken
Russell's talk "Collision Course" at the Australian Science Festival in
Canberra was well attended - one of the most popular talks at the
festival. Now is the time to lobby the
politicians (particularly Prime Minister
John Howard and Defence Minister John Moore).
- 4 May 1999: JPL's Champollion
mission is revised to meet budget limitations. The mission plans to
land on Comet Tempel 1 in 2006.
- 23 Apr 1999: Scientific American article "Tsunami"
- 18 Apr 1999: Tsunami
from asteroid impacts risk values revised downwards based on recent
- 18 Apr 1999: Tsunami
Symposium May 25-27 1999 in Honolulu. Will include: "MEGA-TSUNAMIS
FROM ASTEROIDS AND SLIDES", "Eltanin Asteroid Impact Tsunami" and
"Tsunami Risk for Australia".
- 13 Apr 1999: Asteroid 1999 AN10, was discovered by LINEAR on
13 January 1999. It is included in the MPC list of
potentially hazardous asteroids and probably has a diameter between
670m and 1.5km. According to the
Italian researchers, the object will come particularly close
to Earth in August 2027. No impact is possible in that year, but there
a small chance that the asteroid will be perturbed in such a way that
might impact the Earth in 2039. While the chance of an actual collision
small, one is not entirely out of the question. (quote from Benny J
Peiser, CCNet) See also Explorezone,
Globe (CC), BBC
(CC) , US
ABC News and my
- 13 Apr 1999: Giant impact on
800 million years ago? - speculation!
- 11 Apr 1999: Discovery Channel King
Tut's necklace was probably made from impact debris (tektites) (CC)
- 11 Apr 1999: NASA item Survey
of the Hubble Space Telescope Micrometeoroid and Orbital Debris Impacts
- 11 Apr 1999: Skeptics Newsletter Were
Kenneth Arnold's UFOs Actually Meteor-Fireballs? (CC)
- 26 Mar 1999: Cooperative Research Centre for Satellite
Systems (CRCSS) News item Australian
wins asteroid grant - Mr Frank Zoltowski of Woomera, South
Australia, is one of only three worldwide recipients of thePlanetary
Shoemaker Near Earth Object grants.... Includes discussion on the
- 20 Mar 1999: ABC Radio Science Show had
a report on Queensland
research into nanobacteria (nanobes). The findings have
Related BBC item Do
nanobacteria rule Earth and Mars?
- Interplanetary transfer of
organisms via meteoroids
- the Nanobes survived the vacuum and intense radiation of the electron
microscope (c.f. space travel) and the hot, pressurised
environment 5 km below the seabed (c.f. planetary ejection due to a
cosmic impact and subsequent re-entry) and
- "Nanofossils" in Martian meteorite ALH84001. Until now it
was thought by many scientists that organisms around 20 nanometres -
the size of the nanofossils
- were too small for "life"!
- 19 Mar 1999: Asteroid 1999 FA,
the 167th Potentially
Hazardous Asteroid, was discovered by LINEAR on 16 March 1999.
Diameter probably between 200 and 500m (CC).
- 17 Mar 1999: A glimmer of hope about
Australian funding for Spaceguard: The Coordination Committee on
Science and Technology (CCST) is a committee set up by the Government
of the Commonwealth of Australia, comprising representatives of
departments with an interest in or responsibility for science,
technology and innovation matters It lists "Near Earth Asteroids" under
receiving attention in the current financial year"! . (Secure site:
follow link to CCST from here).
Return to Australian Spaceguard Survey
- 10 Mar 1999: Just finished reading a
new science fiction/thriller "Nemesis" by astronomer Bill Napier. "The
most exciting book I have ever read" - Arthur C ClarkeI agree with Sir Arthur! (tip off from Rob
McNaught - on sale at Big W stores in Australia)
- 9 Mar 1999: New website for NASA's Near-Earth Object Program Office
- 9 Mar 1999: New NEO website NEAR EARTH OBJECTS DYNAMIC
SITE (NEODyS) by University of Pisa, ITALY (CC)
- 9 Mar 1999: Dave Balam from Spaceguard Canada
has just posted some images of
Apollo 1999 CG9 which is suspected of being a 50m sized chunk
- 9 Mar 1999: Spoof newspaper article for the year 2031 Comet
catastrophe - "18.08.31: THE GERMAN nation was in mourning
yesterday after a comet fragment hit the city of Frankfurt. The death
toll is expected to exceed 100,000". [does this help the NEO search
- 3 Mar 1999:BBC UK
Politics 'Invest to avert armageddon' - funding for NEO detection
raised in UK Parliament (CC - Spaceguard UK). See also Hansard
(Transcripts from UK Parliament) and MSNBC (CC) - quote:
need a number of telescopes at different longitudes and different
latitudes in order to have a complete survey. You can think of it this
way: If an asteroid should come by while one side of the earth is
facing it, we want to have a
telescope that can see it. (It is a) very good idea (to set up
telescopes in the Southern Hemisphere, especially Australia).
Should an asteroid pass in an extreme southerly direction, we could
easily miss that one" (Paul Chodas, JPL, 3 March 1999). The issue has
been shuffled around the UK bureaucracy just as in Australia (see correspondence
with Australian politicians.
- 27 Feb 1999: Miami Herald COSMIC ROCKS
GANGING UP ON EARTH - quote "we're way behind," said Don Yeomans,
manager of NASA's
Near Earth Object program (CC).
- 26 Feb 1999: CNN A
chip off the old moon
- 24 Feb 1999: The Phoenix New Times ARIZONA
ASTEROID HUNTERS WERE POISED TO SAVE THE EARTH FROM ARMAGEDDON. THEN A
SECRET AIR FORCE PROJECT TOOK OVER. (CC - Bigrock) Update: DEVIOUS
REPORTING by Tom Gehrels "The article in Phoenix New Times by Tony
Ortega has a devious distortion of an interview. Our LINEAR colleagues
have been reporting on their
detectors for the U. S. Air Force for more than a decade, freely and in
I told Ortega this, and I told him all of the following. Whenever I
a presentation by Grant Stokes and his colleagues at a conference, I
it a point to encourage them to prove their detectors by finding
asteroids near the Earth. They are doing that now, and I think it is
great. Their advance and great success have helped us to obtain better
detectors for Spacewatch too." (Bigrock)
- 20 Feb 1999: From a JPL
press release: "This mission, led by the Japanese space agency
ISAS, is designed to land the palm-sized rover on an asteroid following
its 2002 launch, and return a sample of the asteroid to Earth." MUSES-C Homepage (ISAS).
- 16 Feb 1999: Forthcoming lecture
NEOs by Dr Ken Russell at the Australian Science Festival on 5 May
- 11 Feb 1999: CNN
item - NEAR observations reveal Eros is slightly smaller than
- 10 Feb 1999: Norwegian report Meteor impact
in the Barents Sea - 40km crater, 150 million years ago (CC)
- 6 Feb 1999: The Planetary Society press
release: "The 1999 Gene
Shoemaker NEO Grants, totaling $27,000 (US), have been awarded to
international collection of researchers: Stefan Gajdos of the Slovak
Paulo Holvorcem of Brazil, and Frank Zoltowski of Australia."
- 2 Feb 1999: NASA Budget for
2000 released - couldn't find a mention of NEO research amongst
$13.5 billion of
expenditure! (found it: $3.5million!)
- 26 Jan 1999: Proposal for an
Australian Spaceguard Survey updated
- 21 Jan 1999: Update to NASA's SPACEGUARD
ASTEROID SURVEY: HOW ARE WE DOING? (not very well, but improving!)
- 29 Dec 1998: Another disappointing
response from the Australian Government."Asteroid detection is
not a priority for Defence" !!
- 28 Dec 1998: NASA posts first NEAR pictures of
- 23 Dec 1998 - new paper by Luigi
Foschini: A solution for the Tunguska event ASTRONOMY AND
ASTROPHYSICS 342, (1999), L1-L4. - supports the asteroidal hypothesis
for the origin
of the Tunguska cosmic body
- 22 Dec 1998: CNN item
NASA is trying to re-establish contact with the NEAR spacecraft as it
approaches asteroid Eros. Update 23 Dec: NASA relocates
signal - just!
- 18 Dec 1998: For a brief period CNN is conducting a poll on
funding NEO research - see Quickvote
- 15 Dec 1998: Australian NEO efforts mentioned by Louis
Friedman in the Nov/Dec 1998 issue of The Planetary Report. Note,
however, that Michael Paine is not the "head of Spaceguard Australia" -
in any case there is no formal NEO search organisation in Australia at
- 14 Dec 1998: ABC News item Evidence
of Killer Asteroid - "a killer asteroid smashed Earth in
southeastern Argentina about 3.3 million years ago..." See also the Brown
University Press Release (CC)
- 28 Nov 1998: PSR (Hawaii University) article Dry
Droplets of Fiery Rain by G. Jeffrey Taylor - "Chondrules are
millimeter-sized spherical objects found in meteorites. Chondrules were
molten so long ago that the planets had not yet formed..."
- 25 Nov 1998: Stanford University press release First
direct detection of meteoroid impacts on Saturn rings (CC)
- 20 Nov 1998: Nature
item "Fragment from the K/T impact?" - fossil meteorite believed to be
from the impact.
- Leonids Press Release on 17
- 17 Nov 1998: Since it is likely to be cloudy in Sydney at
pre-dawn tomorrow I might as well watch the Leonids meteor shower live on the Internet ( a NASA
Balloon fitted with a camera!).
- 15 Nov 1998: ABC News item about the Leonid
- 14 Nov 1998: New web site - Yaroslavl' Astronomical Society
- Russian NEO site with a database of NEOs. See also this
item about the possible breakup of an object that was orbiting
the Earth 40 million years ago.
- 5 Nov 1998: Sky & Telescope tips for
observing the meteor shower on 17/18 November.
- 4 Nov 1998: Major revisions to the tsunami
- 24 Oct 1998: Scientific American article The Day the
Sands Caught Fire by by Jeffrey C. Wynn and Eugene M. Shoemaker
- 11 Oct 1998: New journal started Space Debris - An
International Journal Devoted to Artificial Space Debris Research,
Technology, and Policy
- 3 Oct 1998: New Scientist article Space Attack
- the Leonid meteor storm - Duncan Steel quote "I would not depend
for my life on the Global Positioning System being fully functional on
18 November" (note there is also an intense meteor storm - the
Draconids - expected this week, peaking on 8 October.)
Update 6 Oct 1998: US Space
Command press release suggests "Threat to Spacecraft From Leonid
Meteor Storm Said to be Elevated But Not Serious". See also this ESA report
The Australian science TV show Quantum had an item on the
lack of a major southern hemisphere NEO search during its show on
Thursday 24 September. Update 29 Sept : script
now available. Extracts: Don Yeomans, NASA "...we'd very much like
get more participation from the Australians"
Louis Friedman, The Planetary Society "You need good observing in
the southern hemisphere otherwise you're missing .. half the sky"
24 Sept 1998: Space Frontier Foundation press release Asteroid
Hunters to meet in LA
- 24 Sept 1998: ABC News Item Scared
of Asteroids? Blame Gravity - the replenishment of NEOs
- 14 August 1998: Two scientific papers on the mechanisms for
transfer of microbes between planets via asteroid/comet impacts are
about to be published. See this note
from Jay Melosh.
- 9 August 1998: The Age article The Sky
is falling. Really (tip off by Victor Noto, USA)
- 8 August 1998: A draft comprehensive proposal to re-establish the NEO search in
Australia posted on the internet.
- 6 August 1998: New Scientist article Antipodes:
Queensland's giant waves by Ian Lowe. Earthquake generated tsunami
but it seems that there is growing evidence of Australia's
coastline being vulnerable to devastating tsunami.
- 27 July 1998: PSR Item The
Biggest Hole in the Solar System - an impact crater 2500km in
diameter has been found on the far side of the Moon!
- 16 July 1998: NASA Galileo mission releases stunning images
impact craters on Ganymede" including a string
of craters probably caused by a fragmented comet.
- 15 July 1998: NASA news release NASA
ESTABLISHES NEAR-EARTH OBJECT PROGRAM OFFICE AT JET PROPULSION
LABORATORY. See also this CNN
- 15 July 1998: The June 1998 edition of Scientific American (it comes by snail
mail!) has some revealing information about US spending priorities:
US$4 billion per year is spent on "missile
defense systems" (read "Stars Wars") including $800 million per
year on the questionable THAAD missile which has had 4 failures in 4
launches. NASA proposes to spend $50 million on a "
spacecraft whose principal (and probably only) purpose would be to
beam back ... an image
of the [Earth] floating in the blackness of space". Compare this with
$10 million annual budget for a worldwide Spaceguard project
most NEOs 1km diameter or more over a ten year period). Which would
future generations more?
- 9 July 1998: CNN item Impact
zone of giant meteorite confirmed - evidence of an impact in
Greenland in December 1997. "Giant" might be a little exaggerated. See
also this follow-up
story the meteoroid is estimated to have weighed between 30 and 100
tons "at the time of entry".
- 5 July 1998: ABC News report Armageddon
Blasts Science - not too flattering about the new impact movie.
- 6 June 1998: CNN Report Scientists
discuss how to warn about asteroids without causing panic
- 4 June 1998: CNN Report Rock
piles in space - asteroids might be too fragile to deflect with
nuclear weapons. See also Don't
blast that asteroid! (CNN 9 July 1998)
- 2 June 1998: SOHO observes two
comets plunging into the Sun (NASA press release)
- 30 May 1998: New Scientist Editorial
in support of Spaceguard funding.
- 27 May 1998: Clark Chapman's Statement on The
Threat of Impact by Near-Earth Asteroids before the Subcommittee on
Space and Aeronautics of the Committee on Science of the U.S. House of
Representatives May 21, 1998 Extract:"Australia, has actually backed
away from its fledgling telescopic program, which -- until the past
couple of years -- played a fundamental role by following-up on NEO's
discovered elsewhere from its special location in the southern
hemisphere. International attempts to encourage the Australian
government to bring the telescopic program back into operation have
See also Dr Chapman's comprehensive paper on the science, history and
politics of NEO programs The Asteroid/Comet
Impact Hazard and the late Gene Shoemaker's Statement
- 22 May 1998: NBC News article about
the risk of impacts.
- 22 May 1998: TPS
article about multiple impacts 36 millions years ago (Science
article by the late Gene Shoemaker). See also the new TPS NEO page.
- 22 May 1998: ABC
News "The woes of the Galaxy 4 communications satellite, whose
failure disrupted paging services, television and radio broadcasts and
across much of the nation Wednesday, could be just a foretaste of
mayhem to come..."
- 21 May 1998: Not much hope for scientific research in the
Australian Government's Budget!
Where does that leave NEO research?
- 21 May 1998: JPL News release:"NASA astronomers conducting a
monthly sweep of the night sky to identify previously unknown asteroids
and comets will be able to double their coverage and the number of
discoveries they make,
thanks to new, state-of-the-art computer and data analysis hardware.
new equipment was purchased with funds from NASA, which recently
doubled its resources for near-Earth object research."(no links at this
- 17 May 1998: UK Telegraph article How
meteors made an impact Down Under - possibility that a meteor
caused a tsunami which devastated the NSW coast just over 200 years ago
(registration needed). See also Tsunami.
- 17 May 1998: The US Subcommittee on Space and Aeronautics
will hold a hearing entitled "Asteroids: Perils and Opportunities" on
Thursday, May 21, 1998. The purpose of the hearing will be to assess
the dangers of Earth-impacting asteroids, to determine an appropriate
level of response for analyzing this threat, and to examine the
commercial opportunities for these large bodies of minerals. Testimony
will also address the upcoming micrometeoroid shower and possible
threats posed to satellites in orbit. Witness list:Dr. Clark R.
Chapman, Dr. John Lewis, Dr. William H. Ailor. Update:
see this news report 22 May 1998
- 15 May 1998: CNN
item about NASA proposal to delay public announcements of asteroid
- 15 May 1998: ABC
News article about small comets striking the Earth (see Links
- 11 May 1998: Planetary Society article "Dust
from Space May Have Contributed to Earth's Extinctions" - dust
created in association collisions between asteroids may have
to major climate change.
- 29 April 1998: ABC report Too
Close for Comfort - US scientists are also having funding problems.
- 28 April 1998: ABC report Meteroids
Threaten Satellites - the November 1998 meteoroid storm mentioned
our comments page. The hazard to GPS
satellites will recur in November 1999, just after a potential date
with GPS receivers
August 1999 (Update Sept 1998: Fox
News has just come across the problem!). Just in time to compound
problems with computers and electronic control equipment in Year 2000!
- 25 April 1998: Sky
& Telescope June 98 issue has a comprehensive front page
"Impact Hazards: Truth and Consequences" by Gerrit Verschuur.
- 22 April 1998: CNN
article - new evidence that a sudden mass extinction occurred at
Triassic-Jurassic boundary 200 million years ago (see Shiva Hypothesis) - this corresponds to
large, well-dated impact crater - some other extinction peaks may be
to multiple collisions).
- 20 April 1998: Scientific
American article about the technical accuracy of the movie Deep Impact. "Deep Impact
the most lavish effort yet of Hollywood's trying to get the science
- 6 April 1998: Boston
Globe article by David Chandler about NEO discoveries and the
See also Nature.
- 3 April 1998: CNN
article by Janet Asimov about 1997 XF11 and the importance of
- 12 March 98: Scientists have discovered an asteriod that
will pass within a few 10,000 km of Earth in 2028. See this IAU
Press Release. Observations from the Southern hemisphere will be
very important for pinpointing the trajectory. Update
13 Mar: NASA
finds old data which indicates a much less threatening orbit. See also
update by Brian Marsden and Cambridge
(more links below). This reinforces the
of collecting data now for use in the future!. It also means
in the future, scientists will be able to "point the finger" at any
in NEO observations which may have led to early detection of an object
politicians should bear this in mind when considering the funding of
- Also on 12 Mar 98: NASA announces new
evidence that an asteroid/comet impact killed the dinosaurs. See
also this TPS
news item. Not everyone is convinced!(updated
17 May 1998)
- 26 Nov 1997: CNN News item
about a 2 million year old asteroid impact. Based on an article
record and reconstruction of the late Pliocene impact of the Eltanin
in the Southern Ocean" in the 27 Nov 97 issue of Nature