The only people to ever walk on the moon were 12 American astronauts during the six manned Apollo moon missions, which took place between 1969 and 1972. The first two men to set foot on the moon were Neil Armstrong and Edwin "Buzz" Aldrin on July 20, 1969. Four months later, Charles Conrad and Alan Bean landed, followed by Alan Shepard and Edgar Mitchell in February, 1971. Later in 1971, David Scott and James Irwin were the next pair of astronauts to go down in history, with John Young and Charles Duke having a turn in April of 1972. Eight months after that, Gene Cernan and Harrison Schmidt landed. As of this writing, these two were the last humans to set foot on the moon.
Why build a liquid mirror telescope on the moon?
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How can clouds interfere with a shuttle launch?
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What technical specifications will SpaceShipTwo have?
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