China solves one of the doubts of biology with the birth of six “space mice”

The space race has a large number of challenges and China has just resolved one of them, and it was linked to the space biology: the possibility that we may continue to have the ability to reproduce. Something that draws more attention in the competition to reach Marte.

For this, China sent a mouse that was at the Tiangong station. On December 10, 2025, a laboratory of the Chinese Academy of Sciences (CAS), according to a report from Xataka, was the scene of the birth of nine baby mice.

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The surprising thing is that the mother was in space, subjected to microgravity and radiation. Six of the babies have survived and are growing normally.

The experiment has taken some time. It was on October 31 that four mice were sent into space: two males and two females. They remained there for more than two weeks.

The complicated thing was feeding the mice and liquid soy milk was largely chosen. The condition of the mice was also monitored using artificial intelligence.

On November 14, 2025, the animals returned to earth and natural conception occurred, the media reports. This breaks the great doubt that ionizing radiation and the absence of gravity could affect the hormonal axis or the integrity of the DNA of the gametes. On Earth it is the atmosphere that protects and allows reproduction.