U.S. Senator Mark Kelly met with new Environmental Protection Agency administrator Lee Zeldin in Phoenix as part of a ...

A biochemist breaks down challenges that astronauts Suni Williams and Butch Wilmore will face after their long duration in ...

Scott Kelly, a former astronaut, discussed the return of NASA astronauts from the International Space Station on Fox News. He ...

Scott Kelly and Mark Kelly are American astronauts and identical twin brothers. They participated in NASA's Twins Study, ...

Stay informed with real-time updates on all major events in the United States. From breaking news to in-depth stories, we ...

Arizona Sen. Mark Kelly had some choice words for Tesla and Elon Musk on Friday, just days after Musk called the lawmaker a ...

Sen. Mark Kelly resumed his war of words with Elon Musk on Friday with a salty social media video saying he’s ditching his Tesla car to further separate himself from someone who “kind of turned out to ...

Billionaire Elon Musk and Democratic Senator Mark Kelly have traded barbs, following the latter’s recent trip to Ukraine. ...

Elon Musk has picked a fight with Democratic Sen. Mark Kelly of Arizona, and the former astronaut and ex-Navy pilot seems ...

U.S. Senator Mark Kelly (D-AZ) is a retired NASA astronaut who spent 54 days in space. He’s also a retired U.S. Navy Captain, ...