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A astronaut He is a crew member of a space vehicle, that is to say a 'space traveler'. The word comes from astronautics, the science and technology of spaceflight. In the countries of the former USSR, this science was called cosmonautics and cosmonauts to crew members.

The first man who orbited the Earth was cosmonaut Yuri Gagarin, in 1961, and the first American to travel to space was Alan Bartlett Shepard, also in 1961, on a suborbital flight. The following year John H. Glenn. she became the first astronaut in the United States to walk around the Earth, and in 1963, Valentina Tereshkova of the USSR became the first woman to travel to space.

Three American astronauts, Neil A. Armstrong, Edwin E. Aldrin, and Michael Collins, manned the historic July 1969 flight in which Armstrong and Aldrin stepped on the Moon.

The astronaut training program includes information on astronomy, navigation, computer science, meteorology and related subjects, as well as the tests or experiments they will develop on board.

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