When testing the feasibility of humans in space, tests were first conducted using animals. No animal however was used to test a return Moon journey. If a Moon landing was possible, in reality it was not, then surely it would make logical sense to send the astronaut who had the most space experience on the first Moon mission. Someone who had experienced long duration’s of weightlessness in Earth orbit. Apollo 11 was Armstrong’s second and final space mission, which of course was in low Earth orbit.
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