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The Lunar Reconnaissance Orbiter, one of my favorite space probes ever, takes amazing high-res pictures of the lunar surface. But more than that, it can map the elevations of lunar features using shadows as a guide. Knowing the angles of the Sun, the Moon, and its viewing position, it can accurately gauge the elevations of the Moon’s surface as it takes image after image, orbit after orbit.
Via Sakis Koukouvis, ABroaderView
