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Rolling Terrain
The lunar surface is covered with old, overlapping craters, long-since
worn down by the incessant rain of small impactors. Here on the
relatively-young surface of the mare, the area between the larger
craters i much smoother than in the older highlands. In a view
like this, it is difficult to get a feel for just how much up and down
there is. Because the Moon has no atmosphere, it is easy to think
that objects like the crater in the distance to the left of Pete are
much nearer than they really are. And that gives us an impression
that the ups and downs beyond Pete are much more closely-spaced than
they probably are.
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