Mice That Spend a Month in Space Were Able to Reproduce Once They Got Back to Earth

The International Space Station (ISS), seen here with Earth as a backdrop. Credit: NASA

A team of Japanese researchers have used sperm from mice that spent time aboard the International Space Station (ISS) to fertilize female mice back on Earth. While previous research has shown that freeze-dried mouse sperm stored in space can experience radiation damage, these results show that the sperm from live mice may not suffer the same damage.

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