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Mercury's unseen side

Mercury's unseen side
Mercury's unseen side MESSENGER captured this view of a part of Mercury not seen by Mariner 10 on January 14, 2008 at 20:02 UTC, about an hour after the closest approach of its flyby. The image illustrates the complexity of crosscutting relationships among craters, lava flows, and fault scarps that geologists will tease apart throughout MESSENGER's mission. Some craters are fresh, some filled in with lava; many fault scarps cut across the image, often slicing through crater walls, but in some cases the craters disrupt the scarps. NASA / JHUAPL / CIW