Successfully breeding the third litter of mouse babies in space - the latest developments in space mouse research.

This mouse mother who has been to space can actually give birth to more offspring than a normal mouse. Normally, ground mice can give birth to only 5 to 7 offspring per litter. However, this "spacefaring mouse mother" gave birth to 9, 10, and 9 offspring in three separate litters, each litter having an additional two to three babies.