The first class of NASA astronauts, dubbed the ‘Mercury 7,’ were put through a series of rigorous tests to prepare them for space, from heat chambers to to simulated weightlessness. Apollo’s ...
John Glenn was the only one of the Mercury Seven astronauts to fly on the space shuttleon STS-95 in October-November 1998. The flight came 36 years after his only other space mission, Mercury ...
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