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Year: 1969

Mariner 6 & 7

Mariner 6 & 7

March 27, 1969

Launched together on March 27 1969 the two spacecraft reached Mars five days apart on August 5 and 10, 1969.

The two spacecraft returned around 200 images of the planet helping to establish the mass, radius and shape of Mars and revealed that the southern polar ice cap was composed of carbon dioxide.