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AT SEA - JANUARY 31: In this handout from NASA, Ham, a chimpanzee astronaut that flew aboard the Mercury-Redstone 2 spacecraft, is greeted Commander Ralph A. Brackett on the USS Donner after being recovered after a flight January 31, 1961 at sea. (Photo by NASA via Getty Images)

AT SEA - JANUARY 31: In this handout from NASA, Ham, a chimpanzee astronaut that flew aboard the Mercury-Redstone 2 spacecraft, is greeted Commander Ralph A. Brackett on the USS Donner after being recovered after a flight January 31, 1961 at sea. (Photo by NASA via Getty Images)
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