20 agos 1975 año - Viking 1

Descripción:

U.S. launched Viking 1, the first of two spacecraft (along with Viking 2) sent to Mars as part of NASA's Viking program. Viking 1 held the record for the longest Mars surface mission of 2307 days[1] or 2245 sols[1] until that record was broken by Opportunity on May 19, 2010.

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