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Summary

Viking 1 was the first of two spacecraft sent to Mars as part of NASA’s Viking program. It was the first spacecraft to successfully land on Mars and perform its mission, and holds the record for the second longest Mars surface mission of 6 years and 116 days (from landing until surface mission termination, Earth time).

Cospar ID

1975-075a

Launch Date

06/19/76

Sources

http://en.wikipedia.org/wiki/Viking_1