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, ...
Mark Kelly, brother hit back at Musk’s attack on astronaut
Sen. Mark Kelly (D-Ariz.) and his brother, Scott Kelly, both retired astronauts, on Friday called out tech billionaire Elon ...
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 holds the record for the most cumulative days in space and completed a ...