Freeze!

Watch: Virtual tour of Moon's South Pole in two Earth months

It’s cold, dark, and might hold the key to life on new worlds.

David Ladd, NASA Goddard/USRA

NASA/Zuber, M.T. et al., Nature, 2012

It’s cold on the Moon’s South Pole.

There are some regions that the Sun never touches — namely the bottoms of cavernous craters.

Ernie Wright, NASA SVS/USRA

But it’s what’s inside those frigid craters that matters: they might be storehouses for frozen water.