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Astronaut Charles M. Duke Jr., Apollo 16 Lunar Module pilot, is photographed collecting lunar samples at Station No. 1 during the mission's first extravehicular activity at the Descartes landing site. This picture, looking eastward, was taken by Commander John W. Young. Duke is standing at the rim of Plum crater, which is 40 meters (131 feet) in diameter and 10 meters (about 33 feet) deep. The lunar rover can be seen in the background.
Apollo 16, the fifth mission in which humans walked on the lunar surface, launched 35 years ago today on April 16, 1972.