Biographical information on the members of the space flight crews and candidates for future missions in National Aeronautics and Space Administration's (NASAs) space flight programme can be found on the Astronaut Biographies home page. The Astronaut Office of the Johnson Space Center prepares the biographies as a public service. Astronaut Biographies is divided into five categories: career astronauts, astronaut candidates, cosmonauts, payload specialist astronauts and astronaut information. Key terms such as “astronaut,” “cosmonaut,” and “payload specialist” are defined on the homepage. Within the astronaut biographies category are three subcategories: active and management astronauts, former astronauts and international astronauts.
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