Map a million Moon craters

http://blogs.discovermagazine.com/badastronomy/2012/04/30/map-and-measure-a-million-moon-craters/

Wanna do some real science in your spare time? Then join MoonMappers and help astronomer map a million craters by May 5th! They need citizen scientists - that's you - to help find and map a million craters before the next full Moon in a few days. It's easy, it's fun, and it just takes a few minutes. Go! Do science!
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