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Solar System Exploration
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M-69/521 Mission to Mars

Goals: Launched the same day as the U.S.'s successful Mariner 7 Mars-flyby mission, this was a Soviet attempt to orbit Mars.

Accomplishments: None. The launch vehicle failed and the probe never reached Earth orbit.

Key Dates
27 Mar 1969:  Launch
Status: Unsuccessful
Fast Facts
M-69/521 Facts First of a new generation of Soviet probes intended to orbit Mars.

The probe was supposed to reach Mars on 11 Sept. 1959.

The spacecraft's third stage caught fire and caused an engine shutdown before it reached Earth orbit.
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Last Updated: 29 Nov 2010