Few people possess the qualities to even begin training as an astronaut. Applicants must pass tests of character, as well as of the mind and body before being selected. Once chosen astronauts go through an intensive programme of training before being considered to fly a spacecraft. As well as learning how to operate the various systems of a spacecraft, they have to become accustomed to working in a world with zero gravity.

Any adult man or woman in excellent physical condition who meets the basic qualifications can be selected to enter astronaut training. For mission specialists and pilot astronauts, the minimum requirements include a bachelor's degree in engineering, science or mathematics from an accredited institution. Three years of related experience must follow the degree, and an advanced degree is desirable. Pilot astronauts must have at least 1,000 hours of experience in jet aircraft, and they need better vision than mission specialists. Competition is extremely keen, with an average of over 4,000 applicants for about 20 openings every 2 years. Astronaut recruiting occurs periodically. For more information write to the Astronaut Selection Office, NASA Johnson Space Center, Houston, TX 77058.