http://www.jokes4us.com/miscellaneousjokes/weatherjokes/moonjokes.html

Q: Did you hear about the great new restaurant on the moon?
A: The food is excellent, but there's no atmosphere.

Q: Why did the cow jump over the moon?
A: Because the farmer had cold hands!

Q: Did you hear about the bones they found on the moon?
A: It seems like the cow did not make it.