Fig. 1: A lesser-known impact basin, Freundlich-Sharonov, is visible in this Digital Terrain Model (DTM) made from LROC WAC stereo images, and darker shades represent lower elevations than brighter shades. The diameter of the orange-colored ring is 595 km. DTM images like these allow scientists to inventory and study the morphologies of lunar basins [NASA/GSFC/Arizona State University/DLR].
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