April 12, 2019 2:27 PM
Twins study reveals impact of space travel on astronauts
<span style="font-size: 13.3333px;">Scientists have found no long-lasting, major epigenetic differences in astronaut Scott Kelly, who spent a year in space aboard the International Space Station (ISS), and his twin brother, Mark Kelly, who remained on Earth.</span> Epigenetic changes involve chemical "tweaks" to DNA that can influence gene activity, but the changes don't affect the underlying genetic code itself. The changes affect when and h...