Arizona Sen. Mark Kelly knows a few things about objects in outer space, including those that make their way to Earth.

NASA astronaut Mark Kelly on the flight deck of the space shuttle Discovery during the STS-124 mission in June 2008. (Image credit: NASA) Kelly logged more than 54 days on four space shuttle missions.

Mark Kelly gained fame as an astronaut, but as many got to know him as the husband of Gabrielle Giffords, questions arose about his political future.

The next presidential election is still a few years away, but Arizona's senators could be contenders in a wide-open ...

Arizona's U.S. Sen. Mark Kelly and his twin brother, Scott Kelly, slammed Elon Musk after he insulted another astronaut on X.

A Pennsylvania native will be part of a four-person crew flying on the next SpaceX Dragon launch. NASA says Allegheny County ...

As the nation reels from the latest outbreak of political violence, the senator from Arizona and his wife, former Rep. Gabby ...

Sen. Mark Kelly and his twin brother clashed with Trump adviser and world’s richest man Elon Musk after Musk claimed that a pair of astronauts were left on the International Space Station for ...

A former fighter pilot and Nasa astronaut who has flown 20 million miles in space is a top contender to become Kamala Harris’s running mate. Mark Kelly, 60, the Arizona senator, had an interview ...

Sen. Mark Kelly, D-Ariz., was considered a potential vice presidential pick by Kamala Harris. The former NASA astronaut is married to Gabby Giffords, the former congresswoman who was shot in 2011.

Senators introduce a resolution to designate June 30 as National Asteroid Day, emphasizing planetary defense and public ...

Mark Kelly the astronaut, along with identical twin Scott Kelly, the astronaut. In 1996, Mark Kelly was selected as an astronaut in the same NASA class as his identical twin brother, Scott Kelly.