John Herschel Glenn Jr. (July 18, 1921 – December 8, 2016) was an American Marine Corps aviator, astronaut, businessman, and politician. He was the third American in space and the first to orbit the Earth, circling it three times in 1962. Following his retirement from NASA, he served from 1974 to 1999 as a U.S. senator from Ohio. In 1998, he flew into space again at the age of 77.
Before joining NASA, Glenn was a distinguished fighter pilot in World War II, the Chinese Civil War, and the Korean War. He shot down three MiG-15s and was awarded six Distinguished Flying Crosses and eighteen Air Medals. In 1957, he made the first supersonic transcontinental flight across the United States. His on-board camera took the first continuous, panoramic photograph of the United States.
Glenn was one of the Mercury Seven military test pilots selected in 1959 by NASA as the nation's first astronauts. On February 20, 1962, Glenn flew the Friendship 7 mission, becoming the first American to orbit the Earth. He was the third American, and the fifth person, to be in space.
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