In a major breakthrough for space research, mice that spent two weeks aboard China’s Tiangong space station have returned to Earth and successfully given birth. This is the first time such a success has been recorded from the orbiting laboratory.
The experiment gives scientists important information about how living in space affects reproduction and early development in mammals. Understanding these effects is a key step toward learning how long-term space travel might impact humans.
Four mice were sent to space on October 31 as part of China’s Shenzhou-21 crewed mission. They were kept in a special habitat designed to mimic Earth conditions, with controlled temperature, food, and waste management.
While orbiting about 400 km above Earth, the mice were exposed to microgravity, space radiation, and the unique environment of the space station. After two weeks in orbit, they returned safely on November 14.
Back on Earth, the mice were able to reproduce normally, giving scientists valuable data for future studies on how space affects life and reproduction. This research could help prepare for longer human missions to the Moon, Mars, and beyond.