Space Personnel, Neil A. Armstrong, at NASA Training Center. (Photo by Ralph Morse//Time Life Pictures/Getty Images)
John Glenn: Armstrong dared greatly
Former senator and astronaut John Glenn talks about the passing of Neil Armstrong.
03:01 - Source: CNN
Remembering John Glenn 7 videos
Space Personnel, Neil A. Armstrong, at NASA Training Center. (Photo by Ralph Morse//Time Life Pictures/Getty Images)
John Glenn: Armstrong dared greatly
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John Glenn, former Marine Corps pilot, astronaut and U.S. Senator, left, receives the Presidential Medal of Freedom from U.S. President Barack Obama at the White House in Washington, D.C., U.S., on Tuesday, May 29, 2012. The Medal of Freedom is the nation's highest civilian honor. Photographer: Andrew Harrer/Bloomberg via Getty Images
Aviation icon John Glenn dead at 95
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2012: Glenn Remembers His First Mission
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John Glenn's historic space flight (1962)
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John Glenn orbits Earth: 1962
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KENNEDY SPACE CENTER, UNITED STATES:  The crew of the Space Shuttle Discovery (front row) Payload Specialist Chiaki Mukai and Mission Commander Curt Brown; Payload Specialist John Glenn; (C) and Mission Specialist Pedro Duque depart the Operations & Checkout building and head to the Space Shuttle Discovery to begin their mission into space from the Kennedy Space Center, FL 29 October 1998. Glenn, 77, a Payload specialist on Discovery was the first American to orbit the earth in 1962. Discoverys crew will conduct a variety of science experiments in the pressurized SPACEHAB module and deployment and retrieval of the Spartan free-flyer payload.  AFP PHOTO Tony Ranze (Photo credit should read TONY RANZE/AFP/Getty Images)
Former astronaut remembers John Glenn
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Astronaut John Glenn inspects artwork that will be painted on the outside of his Mercury spacecraft, which he nicknamed Friendship 7. On Feb. 20, 1962, Glenn lifted off into space aboard his Mercury Atlas (MA-6) rocket to become the first American to orbit the Earth. After orbiting the Earth 3 times, Friendship 7 landed in the Atlantic Ocean, just East of Grand Turk Island in the Bahamas. Glenn and his capsule were recovered by the Navy Destroyer Noa, 21 minutes after splashdown.

Image Credit: NASA
Hillary Clinton pays tribute to John Glenn
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