The Viking 2 mission was part of the American Viking program to Mars, and consisted of an orbiter and a lander essentially identical to that of the Viking 1 mission.[1] The Viking 2 lander operated on the surface for 1316 days, or 1281 sols, and was turned off on April 12, 1980 when its batteries failed. The orbiter worked until July 25, 1978,[1] returning almost 16,000 images in 706 orbits around Mars.[5]
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