NASA Astronaut Groups

The NASA Astronaut Corps is a unit of the United States National Aeronautics and Space Administration (NASA) that selects, trains, and provides astronauts as crew members for U.S. and international space missions. It is based at Johnson Space Center in Houston, Texas.

History

The first U.S. astronaut candidates were selected by NASA in 1959, for its Project Mercury with the objective of orbiting astronauts around the Earth in single-man capsules. The military services were asked to provide a list of military test pilots who met specific qualifications. After stringent screening, NASA announced its selection of the "Mercury Seven" as its first astronauts. Since then, NASA has selected 22 more groups of astronauts, opening the corps to civilians, scientists, doctors, engineers, and school teachers. As of the 2009 Astronaut Class, 61% of the astronauts selected by NASA have come from military service.

NASA selects candidates from a diverse pool of applicants with a wide variety of backgrounds. From the thousands of applications received, only a few are chosen for the intensive Astronaut Candidate training program. Including the "Original Seven", 339 candidates have been selected to date.

Organization

The Astronaut Corps is based at the Lyndon B. Johnson Space Center in Houston, although members may be assigned to other locations based on mission requirements, e.g. Soyuz training at Star City, Russia.

The Chief of the Astronaut Office is the most senior leadership position for active astronauts in the Corps. The Chief Astronaut serves as head of the Corps and is the principal adviser to the NASA Administrator on astronaut training and operations. The first Chief Astronaut was Deke Slayton, appointed in 1962. The current Chief Astronaut is Gregory R. Wiseman.

Salary

Salaries for newly hired civilian astronauts are based on the federal government's General Schedule pay scale for grades GS-11 through GS-14. The astronaut's grade is based on his or her academic achievements and experience. Astronauts can be promoted up to grade GS-15. As of 2015, astronauts based at the Johnson Space Center in Houston, Texas, earn between $66,026 (GS-11 step 1) and $158,700 (GS-15 step 8 and above).

Military astronauts are detailed to the Johnson Space Center and remain on active duty for pay, benefits, leave, and similar military matters.

Qualifications

There are no age restrictions for the NASA Astronaut Corps. Astronaut candidates have ranged between the ages of 26 and 46, with the average age being 34. Candidates must be U.S. citizens to apply for the program.

There are three broad categories of qualifications: education, work experience, and medical.

Candidates must have a master's degree from an accredited institution in engineering, biological science, physical science or mathematics. The degree must be followed by at least two to three years of related, progressively responsible, professional experience (graduate work or studies) or at least 1,000 hours of pilot-in-command time in jet aircraft. An advanced degree is desirable and may be substituted for experience, such as a doctoral degree (which counts as the two years experience). Teaching experience, including experience at the K – 12 levels, is considered to be qualifying experience.

Candidates must have the ability to pass the NASA long-duration space flight physical, which includes the following specific requirements:
* Distant and near visual acuity: Must be correctable to 20/20, each eye separately (corrective lenses such as glasses are allowed)
* The refractive surgical procedures of the eye, PRK and LASIK, are allowed, providing at least 1 year has passed since the date of the procedure with no permanent adverse after effects.
* Blood pressure not to exceed 140/90 measured in a sitting position
* Standing height between 62 and 75 inches

Members

Astronauts

, the corps has 41 "active" astronauts consisting of 16 women and 25 men or 39.0% female and 61.0% male The highest number of active astronauts at one time was in 2000 when there were 149. All of the current astronaut corps are from the classes of 1996 (Group 16) or later.

There are currently 19 "international active astronauts", "who are assigned to duties at the Johnson Space Center", who were selected by their home agency to train as part of a NASA Astronaut Group and serve alongside their NASA counterparts. While the international astronauts, Payload Specialists, and Spaceflight Participants go through training with the NASA Astronaut Corps, they are not considered members of the corps.

Management astronauts

, the corps has 16 "management" astronauts, who remain NASA employees but are no longer eligible for flight assignment. The current management astronauts are assigned to NASA operations as follows: Ames Research Center (one astronaut); Goddard Space Flight Center (one); Johnson Space Center (ten); Langley Research Center (one); and NASA Headquarters (three). The current management astronauts includes personnel chosen to join the corps as early as 1985 ( Group 11, Associate Administrator Robert D. Cabana) and as recently as 2009 ( Group 20, Serena Auñón-Chancellor of medical and CAPCOM branches).

Astronaut candidates

The term "Astronaut Candidate" (informally "ASCAN") refers to individuals who have been selected by NASA as candidates for the NASA Astronaut Corps and are currently undergoing a candidacy training program at the Johnson Space Center. The most recent class of Astronaut Candidates was selected in 2021.

Only three Astronaut Candidates have resigned before completing training: Brian O'Leary and Anthony Llewellyn, both from the 1967 Selection Group, and Robb Kulin of the 2017 group. O'Leary resigned in April 1968 after additional Apollo missions were cancelled, Llewellyn resigned in August 1968 after failing to qualify as a jet pilot, and Kulin resigned in August 2018 for unspecified personal reasons.chron.com/news/nation-world/space/article/2017-NASA-astronaut-candidate-resigning-this-month-13185081.php

Former members

Selection as an Astronaut Candidate and subsequent promotion to Astronaut does not guarantee the individual will eventually fly in space. Some have voluntarily resigned or been medically disqualified after becoming astronauts but before being selected for flights.

Civilian candidates are expected to remain with the Corps for at least five years after initial training; military candidates are assigned for specific tours. After these time limits, members of the Astronaut Corps may resign or retire at any time.

Three members of the Astronaut Corps (Gus Grissom, Edward White, and Roger B. Chaffee) were killed during a ground test accident while preparing for the Apollo 1 mission. Eleven were killed during spaceflight, on Space Shuttle missions STS-51-L and STS-107. Another four (Elliot See, Charles Bassett, Theodore Freeman, and Clifton Williams) were killed in T-38 plane crashes during training for space flight during the Gemini and Apollo programs. Another was killed in a 1967 automobile accident, and another died in a 1991 commercial airliner crash while traveling on NASA business.

Two members of the Corps have been involuntarily dismissed: Lisa Nowak and William Oefelein. Both were returned to service with the US Navy.

Selection groups

*1959 Group 1 – "The Mercury Seven"
*1962 Group 2 – "The New Nine"
*1963 Group 3 – "The Fourteen"
*1965 NASA Astronaut Group 4, Group 4 – "The Scientists"
*1966 NASA Astronaut Group 5, Group 5 – "The Original 19"
*1967 NASA Astronaut Group 6, Group 6 – "The Excess Eleven (XS-11)"
*1969 NASA Astronaut Group 7, Group 7 – USAF MOL Transfer, no official nickname (Astronauts selected from the Manned Orbiting Laboratory program)
*1978 NASA Astronaut Group 8, Group 8 – "Thirty-Five New Guys (TFNG)" (class included first female candidates)
*1980 NASA Astronaut Group 9, Group 9 – "19+80"
*1984 NASA Astronaut Group 10, Group 10 – "The Maggots"
*1985 Group 11 – no official nickname
*1987 NASA Astronaut Group 12, Group 12 – "The GAFFers"
*1990 NASA Astronaut Group 13, Group 13 – "The Hairballs"
*1992 NASA Astronaut Group 14, Group 14 – "The Hogs"
*1994 NASA Astronaut Group 15, Group 15 – "The Flying Escargot"
*1996 NASA Astronaut Group 16, Group 16 – "The Sardines" (largest class to date, 35 NASA candidates and nine international astronauts)
*1998 NASA Astronaut Group 17, Group 17 – "The Penguins"
*2000 NASA Astronaut Group 18, Group 18 – "The Bugs"
*2004 NASA Astronaut Group 19, Group 19 – "The Peacocks"
*2009 Group 20 – "The Chumps"
*2013 NASA Astronaut Group 21, Group 21 – "The 8-Balls" (composed of four male and four female candidates; highest percentage of females)
*2017 NASA Astronaut Group 22, Group 22 – "The Turtles"
*2022 NASA Astronaut Group 23, Group 23 – "The Flies"

See also

* Roscosmos Cosmonaut Corps
* Canadian Astronaut Corps
* Chinese Astronaut Corps
* European Astronaut Corps
* List of astronauts by selection
* Human spaceflight
* History of spaceflight

Notes

References

Astronaut Candidate Program
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Citations

Sources

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External links

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