Dear List,
Mercury as a source for meteorites arriving on earth seems like the
most unlikely occurrence. I hope someone can point out where I am
wrong, since it would be wonderful to imagine the possibility that
material from the Swift Planet could every make the upstream trip here.
It is
Dear list members,
We are happy to be able to offer five small beautiful slices of the historic
Nakhla meteorite fall with a weight between 0.035g and 0.574g. The specimens of
which some are fusion-crusted have a tempting price.
We are glad to send further information and photos of the Nakhla
http://www.space.com/12536-3-dwarf-planets-discovered-kuiper-belt-pluto.html
Astronomers have discovered three small, icy worlds
orbiting the sun near Pluto, on the outer reaches of
the solar system.
The three newfound bodies are likely big enough to
be rounded by their own gravity, which means
Hi Doug very good to hear from you,
A very compelling poster was presented at a Met Soc meeting back in the 90's
showing a very plausible scenario that might have produced meteorites on Earth
having come from the surface of Mercury. A number of conditions were taken into
careful consideration
At 11:07 AM 8/4/2011, Edwin Thompson wrote:
A very compelling poster was presented at a Met Soc meeting back in
the 90's showing a very plausible scenario that might have produced
meteorites on Earth having come from the surface of Mercury.
Brett Gladman and Jaime Coffey from the University
August 04, 2011
Steve Cole
Headquarters, Washington
202-358-0918
stephen.e.c...@nasa.gov
Guy Webster
Jet Propulsion Laboratory, Pasadena, Calif.
818-354-6278
guy.webs...@jpl.nasa.gov
Daniel Stolte
University of Arizona, Tucson
520-626-4402
sto...@email.arizona.edu
Doug, List,
Mercury Fragments on earth (yes).
Calculating the likelihood of a Mercurian rock arriving here
is a bit more complex, just as for rocks from Mars and the Moon.
What you need is large-scale numerical integration. Sit back
and let Mr. Newton's laws do the work. Let the teraflops roll.
http://www.technologyreview.com/blog/arxiv/27028/?ref=rss
Europe's Plan to Move An Asteroid
Technology Review (MIT)
August 2, 2011
If we ever need to prevent an asteroid hitting Earth, we'll have to
deflect it somehow. To practice, the European Space Agency is planning a
game of asteroid
Hi Doug and list:
I read somewhere that Mercury was hit long ago by something big and powerful
enough to eject most of the planet's crust, leaving only the core. With an
impact of this magnitude, do you not think it is possible that some ejecta got
past venus and ended up on earth? The
Philip R and Listers,
Philip R thank you for the Brett Gladman and Jaime Coffey paper from
Meteoritics and Planetary Science on possibility of meteorites originating from
Mercury. I have to say what I read sounds intriguing and give more hope to the
idea we collectors do in fact have
Craig Moody
I have so say that is a great question you brought up on the topic of Vesta and
the probability of meteorite hit Earth from that particular asteroid
considering there are over 10,000 asteroid in the solar system. I have to
wonder how could there be 997 meteorites from Vesta. I have
http://www.space.com/12536-3-dwarf-planets-discovered-kuiper-belt-pluto.html
Astronomers have discovered three small, icy worlds
orbiting the sun near Pluto, on the outer reaches of
the solar system.
The three newfound bodies are likely big enough to
be rounded by their own gravity, which means
Team Meteorite:
While watching the stock market shrink my retirement fund today, my
mind wandered to meteorites.
I just won a couple small fragments of Shergotty from Adam Hupe's
auctions for which I am glad. This is nearly an impossible meteorite
to acquire. The S in the former class of SNC
http://arxiv.org/ftp/arxiv/papers/0801/0801.4038.pdf
They concluded that there should be a number of meteorites of
Mercurian origin already here -- around 1/3 to 1/2 the number which
originated from Mars.
The fact that Mercurian meteorites have not been found at 1/2 to 1/3 the number
We should always keep an eye out for meteorites that have unusual
characteristics.
That said, I believe there is one fatal flaw in the calculations of the poster
paper.
it is the only planet where impact speeds routinely range from 5—20 times the
planet's escape speed; this causes impact
There was a time when you could say: The fact that
Lunar meteorites have not been found on Earth is
prima facie evidence that there are none.
There was a time when you could say: The fact that
Martian meteorites have not been found on Earth is
prima facie evidence that there are none.
Humans
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