NASA Twins Study spots thousands of genes toggling on and off in Scott Kelly

When astronaut Scott Kelly returned to Earth after a year floating about the International Space Station, he was noticeably different from his identical twin, Mark Kelly. For one, Scott temporarily grew two inches taller, but what really fascinated people were the change in his genes. “There are over 50,000 genes in the human genome, and when floating in zero gravity, the body is trying to manage that situation in new ways,” Chris Mason, one of the principal investigators of the Twins Study and a geneticist at Weill Cornell Medicine, told PBS NewsHour. “Both DNA and RNA were found to express genes in order to compensate for a lifestyle in space.”

Which is really cool, and really important for long periods of space flight. Say, for example, to Mars…

Read about it hereImage result for Scott and Mark Kelly