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Since its launch into orbit on April 25 this year, the Shenzhou 18 crew has been in orbit for three months, and the "space business trip" has progressed more than halfway.

In the first half, they successfully completed two extravehicular activities and carried out a variety of space science and technology experiments. Recently, the three astronauts completed a series of weightlessness protection experiments, including research on bone loss protection technology.

During space flight missions, astronauts are in a weightless environment for a long time, and their bodies will experience space adaptation syndrome. Bone loss is one of the important challenges astronauts face. In order to ensure the health of astronauts in orbit, researchers have developed a bone loss countermeasure device, which stimulates the bone fluid flow in orbit, triggers cell interaction, and achieves the purpose of inhibiting bone loss.

This is a scene of the astronaut crew conducting a muscle adaptation experiment.

While in orbit, astronauts will also use neuromuscular stimulators to prevent muscle atrophy and relax muscles according to prescriptions. The implementation of these experiments and the application of equipment will provide important guarantees for the bone and muscle health of astronauts during their long-term stay in orbit.

In addition, the crew also carried out research and tests on the changing patterns of eye-hand coordination motor ability, and further studied the changing patterns of astronauts' fine operation control stability and accuracy, which will provide a reference for subsequent mission procedures and human-computer interaction design.

At present, the Shenzhou 18 astronaut crew has been in orbit for more than 90 days. With the coordinated cooperation between the ground and the earth, experiments and test projects in the fields of space materials science, space life science, aerospace medicine, etc. are progressing steadily.

Editor: Zhang Bo-hong