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Portrait of John Glenn
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Courtesy of NASA

John Glenn

John Glenn is an American astronaut who was born on July 18,1921, in Ohio. Before he became an astronaut, John Glenn served as a fighter pilot in World War II and the Korean War. He has logged over 5500 hours of flight time.

John Glenn became an astronaut in 1959. He has spent almost 219 hours in space on two spaceflights.

Glenn became the third American in space and the first American to orbit the Earth in 1962. He flew aboard the Mercury 7 (named Friendship 7) spacecraft. He became the most celebrated astronaut of all time.

Glenn left NASA in 1964. He became a U.S. Senator for Ohio in 1974. Glenn rejoined NASA in 1998 for a final mission aboard the shuttle Discovery for a nine day mission (214 hours). His final mission, at 77 years of age was to study the aging process.

Last modified January 28, 2005 by Randy Russell.

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