Edison shows off his phonograph, atom bomb testing heads underground, a chimpanzee orbits the Earth, the Pong craze begins, and the world loses another Beatle, all on this day.
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NASA
1961: Enos becomes the first chimpanzee launched into Earth orbit, on board Mercury Atlas 5. The spacecraft orbited the Earth twice and splashed-down off the coast of Puerto Rico. Enos' flight was a full dress rehearsal for the next Mercury launch on Feb. 20, 1962, which would make Lt. Colonel John Glenn the first American to orbit the Earth.