Question

Surfaces on the same body are assumed to experience meteorite impacts with the same frequency. If this is true, what could account for the stark contrast in impact crater density on bordering regions of Ganymede in the photo?

Answer 1

Newer surfaces are less damaged by impact craters, because they are less damaged by impact.

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Answer 2

The surface with fewer impact craters is a newer surface. It hasn’t been impacted as many times as the older surfaces

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