An image by the High Resolution Imaging Science Experiment camera on the NASA's Mars Reconnaissance Orbiter shows Sawtooth Pattern in Carbon Dioxide Ice on Mars recorded during the month of April through early August 2009. The Mars Reconnaissance Orbiter has been studying Mars with an advanced set of instruments since 2006. (University of Arizona/JPL/NASA/Reuters)
From The Christian Science Monitor:
NASA's Mars Reconnaisance Orbiter spotted ice just below the surface that was exposed by fresh meteor crashes, not far from where the Viking 2 Lander looked in 1976.
NASA’s Mars Reconnaissance Orbiter has found water ice much closer to the planet’s equator than scientists believed possible.
And it’s far purer than they expected, suggesting that in the recent past, the planet’s climate was far more humid than models of Mars’s climate history suggested.
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