Life in space is full of dangers and dangers at any time. How do astronauts avoid risks?

Facing danger is the basic quality for astronauts to cope with crisis. ? Apollo 13? When the spacecraft was carrying out the mission to the moon, the service module exploded, but the astronauts finally saved the day because of their decisive and brave handling in danger. Astronauts should not be nervous when facing difficulties, but should deal with them calmly. If the situation is very critical, astronauts can enter the return capsule and prepare to return to Earth. The journey back to earth may also go wrong.

1971June, Soyuz spacecraft 1 1 was launched with three astronauts. Three Soviet astronauts spent 23 days in the salute, 18 hours and 22 minutes. They successfully completed the scientific experiment, obtained a lot of precious data, and successfully carried out two docking missions in orbit. Three astronauts were ready to return, but unfortunately, when the return capsule was separated from the orbital module, the pressure valve of the return capsule was opened by vibration, and the seal was destroyed, resulting in the rapid air leakage of the return capsule where the astronauts were located and the rapid decompression of the cabin.

Later, the Soviet government investigated the accident and concluded that the design of Soyuz was flawed. The space in the spaceship cabin is so small that three astronauts have to take off their spacesuits to adapt to the environment, which makes them face danger when taking off and re-entering the atmosphere. Later, Soyuz was upgraded to be safer, and the Soviet government required astronauts to wear spacesuits when taking off and returning to Earth. Weibo, from the China Astronaut Research and Training Center, said that with the progress of science and technology and the in-depth study of the physiological, psychological and behavioral characteristics of human beings in space, especially with the continuous expansion of the space station and the accumulation of flight experience, the technical level of ensuring astronauts' long-term stay in space is getting higher and higher. Astronauts are a high-risk profession, and they all have strong enterprising spirit and great sacrifice spirit.

To enter space, astronauts must undergo strict selection, including basic qualification examination, clinical physical examination, physiological function selection, psychological selection, endurance and adaptability to special environmental factors. Generally, 20 astronauts are selected from the outstanding pilots or test pilots of the Air Force. Skills training: mainly help astronauts master various space survival skills, such as the unique skills of adapting to the space environment, eating and sleeping, and how to exercise, put on and take off spacesuits, repair aircraft, or lower the orbit of the space station. Cooperation between heaven and earth: cooperation between heaven and earth is an important measure to prevent and resolve risks. Fearless in the face of danger: when danger comes, facing it bravely is the basic quality of astronauts to deal with the crisis. With the progress of technology and the in-depth study of human physiological, psychological and behavioral characteristics in space, the technical level of astronauts' long-term stay in space stations is gradually improving.