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NASA ECHO II S-131 // From Wikipedia: "Project Echo was the first passive communications satellite experiment. Each of the two American spacecraft, launched in 1960 and 1964, was a metalized balloon satellite acting as a passive reflector of microwave signals. Communication signals were bounced off of them from one point on Earth to another."

Saturn by thebadastronomer, via Flickr - Photo by NASA / JPL / Space Science Institute / GordanUgarkovi

Released to Public: Space Shuttle Discovery by Kim Shiflett (NASA KSC-06PD-2441) by