Who are Scott and Mark Kelly, and what was NASA's Twins Study on the astronauts?
Scott Kelly and Mark Kelly are American astronauts and identical twin brothers. They participated in NASA's Twins Study, ...
Sen. Mark Kelly draws insult from Musk as he blasts Trump policy, Russia
"It's not 'America First' to pull the rug out from under an ally and leave their people to die," Sen. Mark Kelly said after ...
Meet Scott and Mark Kelly, the brothers who were at the centre of NASA's twins study on astronauts
Scott Kelly, a former astronaut, discussed the return of NASA astronauts from the International Space Station on Fox News. He ...