The Planetary Society's Great Comet Crater Contest!What size hole will the Deep Impact probe blow out of the Tempel-1 comet on July 4?
Probably more than a metre in diameter but maybe less than "violating the natural balance of the universe."
You can make your guess with the Planetary Society. The prize will be much less than $311 million compensation demanded from Russian astrologist Marina Bai.
Enter The Planetary Society's Great Comet Crater Contest!