Astronaut

An astronaut, cosmonaut, spationaut or taikonaut (yuhangyuan) is a person who travels into space, or who makes a career of doing so. The criteria for determining who has achieved human spaceflight vary (see edge of space). In the United States, people who travel above an altitude of 50 miles (approximately 80 kilometers) are designated as astronauts. The FAI defines spaceflight as over 100 km (approximately 62 miles). As of October, 2005, a total of 446 humans have reached space according to the U.S. definition (440 people qualify under the FAI definition, while 436 people have reached Earth orbit or beyond). These individuals have spent over 28,000 crew-days (or a cumulative total of 76.7 years) in space including over 100 crew-days of spacewalks. A person who has traveled in space is said to hold astronaut wings. Astronauts from at least 34 countries have gone into space.

International astronauts

Up until the end of the 1970s only Americans and Soviets were active astronauts. In 1976 the Soviets started the Intercosmos program with a first group of 6 cosmonauts from fellow socialist countries, a second group started training in 1978. At about the same time in 1978 the European Space Agency selected 4 astronauts to train for the first Spacelab mission on board of the Space Shuttle. In 1980 France started their own selection of astronauts, followed in 1982 by Germany, in 1983 by the Canadian space program, in 1985 by Japan and Italy in 1988. Several more international payload specialist were selected for the Space Shuttle, and also later for international Soyuz missions of Russia. In 1998 the European Space Agency formed a single astronaut corps of 18 by dissolving the former national corps of France, Germany and Italy.

Related Topics:
1970s - 1976 - Intercosmos - 1978 - European Space Agency - Spacelab - Space Shuttle - 1980 - France - 1982 - Germany - 1983 - Canadian space program - 1985 - Japan - Italy - 1988 - Soyuz - 1998

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