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NASA astronaut Peggy Whitson has spent more days in space than any other American — here’s how much time US astronauts have logged in spac...
American astronauts have racked up an impressive amount of time in zero gravity. Here are the top 15 record-holding US astronauts.
NASA astronaut Mark Kelly, an organic chemist, and an aerospace engineer are all candidates for Congress in 2020 — part of a growing trend of sc...
"I don't think every US senator needs to be an engineer," former NASA astronaut Mark Kelly said. "I think diversity's important."
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 astronaut Mark Kelly is running for Senate in Arizona. He supports stronger federal background checks and more red-flag laws.
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 ...
President Trump signed a directive to help make a US Space Force. Mark Kelly, a Senate candidate and former NASA astronaut, has called it 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
Retired astronaut Mark Kelly announced his bid for former Sen. John McCain's Arizona seat on Tuesday morning with a digital campaign ad.
Astronaut Scott Kelly shared some of the strangest, most interesting details about floating around the International Space Station for a year.
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 inte...
Scott Kelly, retired NASA astronaut, talks about growing up with his identical twin and fellow former astronaut Mark, and his record-breaking year-long mission.
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
Scott Kelly and Mark Kelly are part of a NASA Twin Study designed to learn about how spending a year in space impacts gene expression.