Early in its history, the National Aeronautics and Space Administration (NASA) was already seeking to put a human in space. Once again, the Soviet Union the U.S. beat to the punch when Yuri Gagarin became the first man in space on April 12, 1961. However, the gap was closing as on May 5, 1961, Alan B. Shepard Jr. became the first American to fly into space, when he rode his Mercury capsule on a 15-minute suborbital mission. Project Mercury was the first high-profile program of NASA (National Aeronautics and Space Administration), which had as its goal placing humans in space. The following year, on February 20, John H. Glenn Jr. became the first U.S. astronaut to orbit the Earth.
Following in the footsteps of Project Mercury, Gemini continued NASA's human spaceflight program to and expanded its capabilities with spacecraft built for two astronauts. Gemini's 10 flights also provided NASA (National Aeronautics and Space Administration) scientists and engineers with more data on weightlessness,perfected reentry and splashdown procedures, and demonstrated rendezvous and docking in space. One of the highlights of the program took place during the Gemini 4 on June 3, 1965, when Edward H. White, Jr. became the first U.S. astronaut to perform a spacewalk.
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