Mariner 9 Launched to Map Mars Surface and Study Atmosphere, May 30, 1971

Mariner program: Mariner 9 is launched to map 70% of the surface, and to study temporal changes in the atmosphere and surface, of Mars.

Mariner program: Mariner 9 is launched to map 70% of the surface, and to study temporal changes in the atmosphere and surface, of Mars.

Date: May 30, 1971

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