(That is, the first human spacecraft … the aliens may have been there before us.)
(Venera-3 spacecraft. NASA image.)
Forty-five years ago today — March 1, 1966 — the Venera-3 spacecraft crash-landed on Venus. It had been launched November 16, 1965, from the Baikonur Cosmodrome, and became the first spacecraft to reach the Venusian surface.
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