Mercury - MESSENGER
Two frame MDIS Wide-Angle Camera mosaic of Mercury taken on August 16, 2011. At the time this photo was taken, MESSENGER was high over the southern hemisphere, looking nearly directly down on the south pole from an altitude of 15,000 km. This mosaic captures the hemisphere centered on 180 W. A ring surrounding the crater Chao Meng-Fu, which sits nearly on top of the south pole, is visible along the terminator just left of center.
Image Credit: NASA / JHUAPL / Carnegie Institution of Washington / Justin Cowart