DLR Institute of Planetary Research - 10.04.2012 - Surface covered by regolith and fresh young impacts

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10.04.2012 - Surface covered by regolith and fresh young impacts

This Dawn framing camera (FC) image of Vesta shows a relatively smooth area of Vesta’s surface. This region is smooth because it is mostly covered by fine-grained debris, known as regolith. There are some fresh impact craters that are younger than the regolith. These craters are generally small, less than 1 kilometer (0.6 mile) in diameter, and have fresh rims. Some of the larger craters with more degraded rims may be craters that are older than the regolith and were partially buried by it. Many linear features are also seen in the regolith. Small-scale grooves and ridges, which are less than 1 kilometer (0.6 mile) in width, run diagonally across the image from top left to bottom right and from top right to bottom left.

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