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

Mark Kelly of Arizona on Friday became one of the highest profile figures yet to ditch his Tesla in favor of a new ride, ...

WASHINGTON − Elon Musk and Sen. Mark Kelly, D-Ariz., traded jabs on social media Monday, after the billionaire space ...

Senator Mark Kelly, an Arizona Democrat and former astronaut, visited Ukraine over the weekend and said the United States ...

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

He’s a former astronaut who clocked more than 50 days in space ... Traitors don’t show up for duty. Mark Kelly just did with ...

Senator Mark Kelly said he was getting rid of his Tesla Model S after billionaire Elon Musk called the senator a "traitor" on ...

President Donald Trump’s increasingly influential adviser, Elon Musk, called Sen. Mark Kelly (D-AZ) “a traitor” over a social ...

Sen. Mark Kelly (D-Ariz.) clapped back at tech billionaire Elon Musk after he called Kelly a “traitor” for visiting Ukraine ...

like Mark Kelly, also a former astronaut. He called continuing attacks “war crimes carried out by Russia.” “It’s not ‘America ...

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