Tagged With Mark Kelly

NASA astronaut Mark Kelly, an organic chemist, and an aerospace engineer are all candidates for Congress in 2020 — part of a growing trend of scientists running for office


NASA astronaut Mark Kelly, whose wife Gabby Giffords was shot in the head, still owns guns. He says Congress could do a lot more to keep people safe.


NASA's 4-year twin experiment gets us closer to Mars than ever before



NASA astronaut Peggy Whitson has spent more days in space than any other American — here's how much time US astronauts have logged in space, ranked


Trump just got a step closer to creating a US Space Force. Mark Kelly, a retired NASA astronaut and Senate hopeful, has said it's 'a dumb idea.'


Former astronaut Mark Kelly announces he's running for John McCain's Senate seat in an emotional ad featuring his wife Gabby Giffords



NASA astronaut Scott Kelly on his poor grades in school, his biggest fear when he's away from Earth, and how SpaceX fits into the future of interplanetary travel


NASA sent Scott Kelly to space for a year, and 7% of his genes are now expressed differently than those of his identical twin Mark


NASA sent one identical twin brother to space for a year and studied how it changed him -- here are the first results