Among the four experimental mice carried on the Shenzhou 21 mission, one mouse couple has successfully given birth to three litters of healthy mouse babies.According to reports, the similarity between mouse and human genes is as high as 85%, and various experiments have important reference value for humans.

Moreover, mice can be called fertility supermen. It takes about 3 weeks from pregnancy to delivery. They can become pregnant immediately after giving birth. The mouse babies can "get married and have children" when they are two months old.

Because of this, scientists can observe the impact of space experience on mouse reproduction and the health of offspring in a short period of time.

The most interesting discovery this time is that this mouse mother who has been in space can actually give birth to more children than ordinary mice.

Under normal circumstances, ground mice only give birth to 5 to 7 children in one litter. As a result, this "aerospace mouse mother" gave birth to 9, 10 and 9 litters respectively, with two or three more babies in each litter.

Comparatively observing these three litters of mice, scientists also found that the "personality" of the baby mice was also quietly changing.

The mice in the first litter are generally "socially afraid" and like to stuff cotton into the red house, hiding themselves tightly inside and rarely coming out to move around;

By the second nest, they were obviously more relaxed. They no longer dragged all the cotton into the red house, and were willing to come out to explore and run.

Overall, one litter is more adapted to life on the ground than the other, and these subtle changes also provide important clues for studying the reproduction of life in space.

According to the plan, the scientific research team will carry out longer-term mouse space science experiments, simulating human life in orbit for more than half a year, and studying the physiological responses and spatial adaptability of mice.

These studies are approaching the most core question: whether humans can thrive in space. This is also the only way for humans to go into deep space.