Spaceflight Was Possible • Spaceflight Was Possible

After landing in the ocean near the Bahamas, Shepard was pulled to safety, and a group of NASA doctors put the astronaut through an intensely thorough checkup once he returned to Space Center Houston. They checked his vital signs, balance, and mental coordination. As it turned out, Shepard was completely healthy — this had lasting ramifications. Photo Credit: Dean Conger/Corbis via Getty Images

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