Sen. Mark Kelly visited the Grand Canyon National Park' South Rim Friday, Aug. 8, to learn more about the impacts of the ...

Ariel Emanuel, TKO CEO, and Mark Shapiro, TKO president & COO, join CNBC's 'Squawk on the Street' to discuss the company's new $1.1 billion per-year deal with Paramount for exclusive UFC rights ...

Kelly laments the death of astronaut Jim Lovell and a U.S. disinvestment from science while sidestepping White House talk.

An unexpected treasure trove of information about how spaceflight impacts the human body was recently given to Jeffery ...

Tributes began pouring in for famed Apollo 13 commander Jim Lovell after his death at 97 years old. Lovell died on Thursday in Lake Forest, Illinois, NASA announced in a news release. He is survived ...

U.S. Sen. Mark Kelly of Arizona was inducted Saturday into the U.S. Astronaut Hall of Fame at the Kennedy Space Center Visitor Complex in Florida. He and the other retired NASA astronaut inducted ...

Scott and Mark Kelly, the only twins to have traveled in space, are embarking on a mission to help NASA prepare for Mars ...

Kelly's parents, Richard and Patricia, were both police officers in West Orange, New Jersey, where they raised both Mark and his twin brother Scott, who both became NASA astronauts who reached space.

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.

Mark Kelly’s path from New Jersey to Navy captain — from rowdy kid to decorated aviator — is a less-known part of his biography.