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Post by bot on Aug 28, 2016 13:29:04 GMT -5
NASA Viking Mission to Mars by info@c-spanarchives.org (National Cable Satellite Corporation) NASA historians discussed the Viking program, which landed the first U.S. spacecraft on Mars on July 20, 1976. They also talked about the scientific experiments conducted on Mars and how the program evolved. www.c-spanvideo.org/program/412745-1
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