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MRO finds new evidence for dry ice formation of gullies on Mars

Before and after images showing the formation of a new gully channel in Terra Sirenum, taken between Nov. 5, 2010 and May 25, 2013.
Before and after images showing the formation of a new gully channel in Terra Sirenum, taken between Nov. 5, 2010 and May 25, 2013.
NASA/JPL-Caltech/Univ. of Arizona
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