What do astronauts do?

Astronauts, or astronauts, are full-name astronauts, referring to people who take space flight as their profession or have flown in space. The criteria for determining space flight are not completely uniform. In the United States, people who travel above 80 kilometers (50 miles) above sea level are called astronauts. The space flight defined by the International Aviation Federation (FAI) needs to exceed100km.

By April 18, 2004, 440 people had spent 27,082 crew-days in space and enjoyed 98 crew-days through spacewalking according to the definition of * * * in the United States. According to the definition of the International Aviation Federation, only 434 people meet the requirements.

The astronauts who went into space came from at least 32 countries. In Hong Kong and Southeast Asia, astronauts are also called astronauts. As of 20 13, only the former Soviet Union/Russia, the United States and China have the ability to launch manned space missions. Astronauts from other countries need to cooperate with the above three countries to complete manned space missions. Since the first human flight in 196 1, astronauts from 38 countries have successively flown.

Extended data

Astronauts are divided into professional and non-professional categories by occupation, and generally divided into pilots, mission experts and load experts according to tasks, or commanders, drivers, airborne engineers and flight engineers.

China astronaut selection requirements:

September, 2065438+April 13, China will complete the selection of the third batch of astronauts in the last two years, and women will not be considered in this selection for the time being.

According to the plan, China will launch Tiangong-2 space experimental module around 20 16, and then launch Shenzhou 11 spacecraft and Tianzhou-1 cargo spacecraft to dock with it. It is planned to complete the construction of the space station around 2022.

At present, there are 2 1 astronauts in China, all of whom are from the pilot team. Since the task of the space station requires astronauts' physical and mental qualities and professional knowledge, engineers will be selected from R&D departments related to manned spaceflight engineering to join the astronaut team from the third batch.

With the development of manned spaceflight project, doctors or psychologists may be selected from medical experts. Considering the demand for astronauts in future missions and the fact that there are already two women in the astronaut team, the third batch of female astronauts will not be selected for the time being.

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