Nov. 13, 1971: Mariner 9 orbits Mars
On May 30, 1971, Mariner 9 rolled out, setting off on its mission to Mars. 13, 167 days later, it entered orbit around Mars, making it the first spacecraft to orbit another planet.
On May 30, 1971, Mariner 9 rolled out, setting off on its mission to Mars. 13, 167 days later, it entered orbit around Mars, making it the first spacecraft to orbit another planet. With Mariner 8, Mariner 9 was one half of the Mars 71 mission. But when Mariner 8 rolled out on May 9, Continue reading "Nov. 13, 1971: Mariner 9 orbits Mars" The post Nov. 13, 1971: Mariner 9 orbits Mars appeared first on Astronomy Magazine .
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