Differences in lighting

Differences in lighting
Differences in lighting These photographs show an unnamed crater not far from the one in the animation above. Located at 86°N and 80°E, this crater is 4.1 miles (6.6 kilometers) in diameter. On the left is a conventional view, in which most of the crater is cloaked in darkness. The enlarged picture on the right shows that same dark region, but now with some of the detail of the interior made visible using light reflected from the sunlit walls of the crater. It reveals a relatively bright (or, more to the point, a more reflective) region 1.1 miles (1.7 kilometers) across. NASA / JPL-Caltech / UCLA / MPS / DLR / IDA

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