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‘Mercury Seven’: Charts attempts by the USA to send the Mercury 7 astronauts (most notably John Glen) into space in the Atlas Booster; which, after a potentially disastrous mission whereby Glen’s shuttle almost lost its heat shield, were ultimately successful. Glen became the first American to orbit the Earth, and the first to avert potential disaster. This series of missions paved the way for the most famous space adventure of all – the Apollo 11 moon landing in 1969.