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Able and Miss Baker became the first monkeys to successfully return to Earth after space traveling. In 1959 NASA launched mission, which goal was to closely monitor life signs, mental state and cabin environment of these monkeys and safely return them to Earth alive.
Gordo or "Old Reliable" was one of the first monkeys sent into the space. He traveled further than any monkey had ever travelled before, but unfortunately was killed because his parachute module failed.
Sam was a rhesus monkey that flew to an altitude of 88 km in 1959. During launch Sam experienced force 19 times higher than normal gravity. He did not receive any negative effect from this flight.