Space/Science — HabitableZone

Space/Science

Question: Is this a impact crater on Mars or not?
BRFelix — (archived)

And how can we be sure? There are thousands of similar formations on Mars. Are they all impact craters? Some of them? None of them? How can we know?

http://ida.wr.usgs.gov/fullres/divided/sp2459/sp245905b.jpg

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