Japanese researchers found mouse sperm exposed to high levels of cosmic radiation for nearly six years produced a large brood of healthy, unremarkable “space pups.”
Their study was published Friday in Science Advances — which noted no signs so far of Mousezillas or rodent Hulks.
The sperm was stored in the International Space Station in freeze-dried form. Once brought back to Earth and rehydrated, it resulted in the birth of 168 young, free of genetic defects.
Developmental biologist and lead author Teruhiko Wakayama told AFP on Thursday that there was little difference between mice fertilized by space sperm and sperm that had remained confined to…
