Turns out, space isn’t just tough on astronauts’ muscles and bones—it actually makes your stem cells age faster! Scientists found that in microgravity, stem cells get super stressed, burn out, and even activate parts of our DNA that are usually silent (the so-called 'dark genome'). The good news? These cells can bounce back after returning to Earth, but it takes about a year. This research could help astronauts—and maybe even cancer patients—fight aging and stay healthier, both in space and back home. #Science #SpaceScience #StemCells