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The Great Comet Crater Contest
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post Apr 21 2005, 06:12 PM
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http://www.planetary.org/news/2005/deep_im...ntest_0421.html

If you slam a chunk of metal into a comet at extremely high speed, will it sink like a stone in snow or blast a sizeable crater out of the surface? The Planetary Society invites you to make your best guess on how big the hole will be when NASA's Deep Impact mission releases an impactor projectile in the path of Comet Tempel 1 for a planned collision on July 4, 2005. The "Great Comet Crater Contest" can be found at http://planetary.org/deepimpact.
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