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Ice Cliffs Spotted on Mars

Thick bands of ice (blue) have been spotted in steep cliff faces. NASA/JPL/UNIVERSITY OF ARIZONA/USGS

Ice cliffs spotted on Mars

Science Magazine

For more than a decade, Colin Dundas, a geologist at the U.S. Geological Survey in Flagstaff, Arizona, has had a daily routine: inspecting a dozen or so high-resolution images beamed back every day from the Mars Reconnaissance Orbiter (MRO). A few years ago, something surprising popped out from the planet’s sea of rust: a pale sliver of blue.