Water on the Moon: a Billion Gallons

Water on the moon? Scientists used to think it was as dry as, well, lunar dust. But after a year of analysis NASA today announced that its LCROSS lunar-impact probe mission found up to a billion gallons of water ice in the floor of a permanently-shadowed crater near the moon's south pole. That's enough, said researchers, to fill 1,500 Olympic-size swimming pools, all from one crater. If there is ice there, it probably exists in other places on the moon as well. They also found silver,...Full Story