› added 4 years ago
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TIL: The first-ever solar-powered satellite, Vanguard 1, is "the oldest human-made object still in orbit" (plus some of its launch rocket). Launched in 1958, it stopped talking in 1964 but continues orbiting. The three sats older than it (Sputniks 1 & 2, Explorer 1) are no longer in orbit.