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Events on Friday 3 September 1976 1
1976Viking 2 lands on MarsSecond NASA probe lands on MarsNASA's Viking 2 lander reached the surface of Mars on 3 September 1976, touching down at Utopia Planitia to conduct experiments alongside its sister craft Viking 1. It returned images and soil analysis data for more than three years. Together, the two Viking landers provided the first extended study of the Martian surface.