Ice on Mars also
Martian Ice Exposed by Meteorite Impacts
09.24.2009
September 24, 2009: Meteorites recently striking Mars have exposed deposits of frozen water not far below the Martian surface. Pictures of the impact sites taken by NASA's Mars Reconnaissance Orbiter show that frozen water may be available to explorers of the Red Planet at lower latitudes than previously thought.
"This ice is a relic of a more humid climate from perhaps just several thousand years ago," says Shane Byrne of the University of Arizona, Tucson.
From:
http://science.nasa.gov/headlines/y2009/24sep_martianice.htm?list973507