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aug 20, 1975 - Viking 1
Description:
U.S., launched Aug. 20, 1975. The Mars orbiter operated from June 1976 to 1980 and the lander operated from July 1976 to 1982.
Added to timeline:
29 Jan 2018
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A04CindyVergara
Date:
aug 20, 1975
Now
~ 48 years ago
Images: