After the successful landing of the Shenzhou-12 astronauts, why did one of them leave by plane?

Because that person has other things, it is more convenient for him to do other things.

On the surface of the earth, our muscles and bones have been fighting gravity, and our muscles and bones have adapted to the earth's environment. In the microgravity environment, the muscles and bones of the human body no longer need to resist gravity, but are in a relaxed state for a long time. However, our muscles and bones belong to "use and consumption". If it is not used for a long time, astronauts will have different degrees of muscle atrophy and bone loss. But don't worry, after the astronauts return to Earth for a period of time, their muscles and bones will slowly recover.

After working and living in weightlessness for a period of time, astronauts will have different degrees of head transfer of body fluids, skeletal muscle atrophy and bone calcium loss. When the spacecraft returns to the ground, the astronauts will not be able to adapt to the normal gravity environment when they return to the ground from microgravity. Astronauts often feel weak, pale and low blood pressure due to the decline of upright endurance. Before the astronauts leave the cabin, medical insurance personnel will enter the cabin to assess the health status of the astronauts and help them replenish drinking water and nutrient solution. In order to prevent accidents, all activities should be seated after leaving the cabin.

According to the network data, at 202 1 on August 20th, Beijing time, astronaut Nie Haisheng successfully opened the exit door of the node module of Tianhe core module. The two astronauts are in excellent health. In addition, after leaving the cabin, the two astronauts carried out related work and completed the installation of the angle limiter on the robotic arm and the extravehicular workbench. Later, with the support of the mechanical arm, we cooperated with each other to assemble related equipment outside the cabin, so our astronauts were actually very healthy.

China's space industry has developed rapidly. This rapid development has not only made contributions and preparations for people now, but also kept developing. Just as people in the past could not understand how mobile phones traveled around the world, ordinary people may travel in space in the future.