Probe Finds Moon's Shackleton Crater Pretty Dry

Up to 22 percent of the surfaces of Shackleton Crater, located near the moon's south pole, may be water ice -- but that's not a lot.

June 20, 2012
5:14 PM EDT
WATCH VIDEO: NASA smashes the LCROSS and spent Centaur rocket into the moon in a search for water on the lunar surface.