Walter Marty Schirra Jr. was an American naval aviator, test pilot, and NASA astronaut. In 1959, he became one of the original seven astronauts chosen for Project Mercury, which was the United States' first effort to put human beings into space. On October 3, 1962, he flew the six-orbit, nine-hour, Mercury-Atlas 8 mission, in a spacecraft he nicknamed Sigma 7. At the time of his mission in Sigma 7, Schirra became the fifth American and ninth human to travel into space. In the two-man Gemini program, he achieved the first space rendezvous, station-keeping his Gemini 6A spacecraft within 1 foot (30 cm) of the sister Gemini 7 spacecraft in December 1965. In October 1968, he commanded Apollo 7, an 11-day low Earth orbit shakedown test of the three-man Apollo Command/Service Module and the first crewed launch for the Apollo program.
The Mercury Seven were the group of seven astronauts selected to fly spacecraft for Project Mercury. They are also referred to as the Original Seven and Astronaut Group 1. Their names were publicly announced by NASA on April 9, 1959; these seven original American astronauts were Scott Carpenter, Gordon Cooper, John Glenn, Gus Grissom, Wally Schirra, Alan Shepard, and Deke Slayton. The Mercury Seven created a new profession in the United States, and established the image of the American astronaut for decades to come.
NASA Astronaut Group 3—'The Fourteen'—was a group of fourteen astronauts selected by NASA for the Gemini and Apollo program. Their selection was announced in October 1963. Seven were from the United States Air Force, four from the United States Navy, one was from the United States Marine Corps and two were civilians. Four died in training accidents before they could fly in space. All of the surviving ten flew Apollo missions; five also flew Gemini missions. Buzz Aldrin, Alan Bean, Gene Cernan and David Scott walked on the Moon.
The Mercury 13 were thirteen American women who took part in a privately funded program run by William Randolph Lovelace II aiming to test and screen women for spaceflight. The participants—First Lady Astronaut Trainees as Jerrie Cobb called them—successfully underwent the same physiological screening tests as had the astronauts selected by NASA on April 9, 1959, for Project Mercury. While Lovelace called the project Woman in Space Program, the thirteen women became later known as the Mercury 13—a term coined in 1995 by Hollywood producer James Cross as a comparison to the Mercury Seven astronauts. The Mercury 13 women were not part of NASA's official astronaut program, never flew in space as part of a NASA mission, and never met as a whole group.
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