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Mars 7
Missions to Mars
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Mars 7
Mars 7 Mission to Mars

Goals: Like its sister mission, Mars 6 (which arrived at Mars three days later) Mars 7 was to place a lander on the surface of Mars. The bus was to fly by the planet, taking measurements as it passed.

Accomplishments: The bus that carried the lander to Mars collected and transmitted data as it flew by the planet. But the lander's main retro-rocket failed to fire, so rather than descend, the lander flew by Mars at a distance of 1,300 km.

Key Dates
9 Aug 1973:  Launch
9 Mar 1974:  Mars Flyby
Status: Unsuccessful
Fast Facts
Mars 7 Facts The Mars 7 flyby spacecraft did manage to collect data as it flew past the Red Planet.

It is believe a faulty transistor caused the retro rocket failure that caused the lander to miss Mars.

This was the last Soviet attempt to explore Mars for 15 years.
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Last Updated: 30 Nov 2010