This image, combining data from two instruments aboard NASA's Mars Global Surveyor, depicts an orbital view of the north polar region of Mars. The ice-rich polar cap (the quasi-circular white area at ...
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Mars scars reveal the story of a red planet ice age
Recent high-resolution imaging of Mars has unveiled deep ‘scratches’ and craters that suggest the Red Planet once experienced an ice age. These geological features, which include eroded valleys and ...
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