page_title: Neil Armstrong
section_title: Gemini 8
hierarchical_section_title: Neil Armstrong / Astronaut career / Gemini program / Gemini 8
caption_attribution_description: English: Astronauts Neil A. Armstrong (right) and David R. Scott (left) sit with their spacecraft hatches open while awaiting the arrival of the recovery ship, the USS Leonard F. Mason after the successful completion of their Gemini VIII mission. They are assisted by U.S. Air Force Pararescuemen, who jumped to their spacecraft. The Pararescuemen are: A/2C Glenn M. Moore (by the hatch), A/1C Eldridge M. Neal (upper left); and S/Sgt Larry D. Huyett (center standing on the floatation collar). The overhead view shows the Gemini 8 spacecraft with the yellow flotation collar attached to stabilize the spacecraft in choppy seas. The green marker dye is highly visible from the air and is used as a locating aid. Čeština: Kosmická loď Gemini 8 na hladině Tichého oceánu. Astronauti Neil A. Armstrong a David R. Scott sedí v otevřené Gemini 8 a čekají na vyzdvižení na palubu záchranné lodi. Asistují jim tři potápěči z USS Leonard F. Mason.
context_page_description: Neil Alden Armstrong was an American astronaut and aeronautical engineer and the first person to walk on the Moon. He was also a naval aviator, test pilot, and university professor.
  A graduate of Purdue University, Armstrong studied aeronautical engineering; his college tuition was paid for by the U.S. Navy under the Holloway Plan. He became a midshipman in 1949 and a naval aviator the following year. He saw action in the Korean War, flying the Grumman F9F Panther from the aircraft carrier USS Essex. In September 1951, while making a low bombing run, Armstrong's aircraft was damaged when it collided with an anti-aircraft cable, strung across a valley, which cut off a large portion of one wing. Armstrong was forced to bail out. After the war, he completed his bachelor's degree at Purdue and became a test pilot at the National Advisory Committee for Aeronautics High-Speed Flight Station at Edwards Air Force Base in California. He was the project pilot on Century Series fighters and flew the North American X-15 seven times. He was also a participant in the U.S. Air Force's Man in Space Soonest and X-20 Dyna-Soar human spaceflight programs.
context_section_description: The crew assignments for Gemini 8 were announced on September 20, 1965. Under the normal rotation system, the backup crew for one mission became the prime crew for the third mission after, but Slayton designated David Scott as the pilot of Gemini 8. Scott was the first member of the third group of astronauts, whose selection was announced on October 18, 1963, to receive a prime crew assignment. See was designated to command Gemini 9. Henceforth, each Gemini mission was commanded by a member of Armstrong's group, with a member of Scott's group as the pilot. Conrad would be Armstrong's backup this time, and Richard F. Gordon Jr. his pilot. Armstrong became the first American civilian in space. (Valentina Tereshkova of the Soviet Union had become the first civilian—and first woman—nearly three years earlier aboard Vostok 6 when it launched on June 16, 1963.) Armstrong would also be the last of his group to fly in space, as See died in a T-38 crash on February 28, 1966, that also took the life of crewmate Charles Bassett. They were replaced by the backup crew of Tom Stafford and Gene Cernan, while Jim Lovell and Buzz Aldrin moved up from the backup crew of Gemini 10 to become the backup for Gemini 9, and would eventually fly Gemini 12.
  Gemini 8 launched on March 16, 1966. It was the most complex mission yet, with a rendezvous and docking with an uncrewed Agena target vehicle, and the planned second American space walk (EVA) by Scott. The mission was planned to last 75 hours and 55 orbits. After the Agena lifted off at 10:00:00 EST, the Titan II rocket carrying Armstrong and Scott ignited at 11:41:02 EST, putting them into an orbit from which they chased the Agena. They achieved the first-ever docking between two spacecraft. Contact with the crew was intermittent due to the lack of tracking stations covering their entire orbits. While out of contact with the ground, the docked spacecraft began to roll, and Armstrong attempted to correct this with the Gemini's Orbit Attitude and Maneuvering System (OAMS). Following the earlier advice of Mission Control, they undocked, but the roll increased dramatically until they were turning about once per second, indicating a problem with Gemini's attitude control. Armstrong engaged the Reentry Control System (RCS) and turned off the OAMS. Mission rules dictated that once this system was turned on, the spacecraft had to reenter at the next possible opportunity. It was later thought that damaged wiring caused one of the thrusters to stick in the on position.
  A few people in the Astronaut Office, including Walter Cunningham, felt that Armstrong and Scott "had botched their first mission". There was speculation that Armstrong could have salvaged the mission if he had turned on only one of the two RCS rings, saving the other for mission objectives. These criticisms were unfounded; no malfunction procedures had been written, and it was possible to turn on only both RCS rings, not one or the other. Gene Kranz wrote, "The crew reacted as they were trained, and they reacted wrong because we trained them wrong." The mission planners and controllers had failed to realize that when two spacecraft were docked, they must be considered one spacecraft. Kranz considered this the mission's most important lesson. Armstrong was depressed that the mission was cut short, canceling most mission objectives and robbing Scott of his EVA. The Agena was later reused as a docking target by Gemini 10. Armstrong and Scott received the NASA Exceptional Service Medal, and the Air Force awarded Scott the Distinguished Flying Cross as well. Scott was promoted to lieutenant colonel, and Armstrong received a $678 raise in pay to $21,653 a year (equivalent to $170,626 in 2019), making him NASA's highest-paid astronaut.
caption: Recovery of Gemini 8 from the western Pacific Ocean; Armstrong sitting to the right
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