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, ...
US News Live Today March 19, 2025: Who are Scott and Mark Kelly, and what was NASA's Twins Study on the astronauts?
Stay informed with real-time updates on all major events in the United States. From breaking news to in-depth stories, we ...
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 ...