Click here to search Online-Sweepstakes.com for other sweepstakes and contests from planetary.org

The Planetary Society - Great Comet Crater Contest

1x per person  |  home page  |  guess  |  1 note  ·   ·  link

Grand Prizes (3): Laser-engraved copper plaque and one year of membership in The Planetary Society.
Runner-up Prizes (150): Certificate and Deep Impact Spacecraft paper model.

Comments: Come up with your best guess for the diameter, in meters, of the crater that Deep Impact will create on the surface of comet Tempel 1. Guess within 10 meters of the actual crater diameter to be eligible for prize.

official rules  ·  archive  |  Open to all

expires  Sunday, July 3, 2005 @ 10:50pm PTSubmitted 4/27/05