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

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NASA astronaut Scott Kelly came back to Earth after spending almost an entire year at the International Space Station, breaking the record for the longest spaceflight by an American. He and his ...

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 ...

Sen. Mark Kelly (D-Ariz.) and his brother, Scott Kelly, both retired astronauts, on Friday called out tech billionaire Elon Musk over his attacks on an astronaut on his social platform X.

Mark Kelly and his twin brother, Scott Kelly, both retired astronauts. The dispute stemmed from comments made by former President Donald Trump, who blamed the Biden administration for delaying the ...

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

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