Study: Mice can still reproduce after spending a month in space

Tokyo: Male mice that spent more than a month in space were able to successfully reproduce back on Earth, a study has found, the first evidence of how space travel affects reproduction in mammals.

There have been some signs that spending time in space could negatively affect sperm, including radiation damage seen in freeze-dried mouse sperm that spent nine months in outer space, and decreased sperm counts in rats that spent 13 days in orbit.