<p>Figure 8 Craters on Mars – When we see a combination of two crater shapes on the ground, the one showing a nearly “full circle” will be the younger crater. In this image, we see the combined shape of two impact craters. However, neither crater displays a continuous circular shape (or rim) in the area connecting them. These two “figure 8” shapes indicate a binary impact where the impactor split apart shortly before hitting the ground, creating both craters at the same time.
</p><p>NASA/JPL/University of Arizona (307 km above the surface, less than 5 km top to bottom and north is to the left)
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2018-06-25 16:51
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