Mr. Kelly is a U.S. senator from Arizona and a former NASA astronaut. There’s no country better at solving hard problems than ...

Mark and Scott Kelly, twin brothers and former NASA astronauts, spoke to "CBS Mornings" about how the agency is set to lose ...

America is becoming a nation of homebodies' Diana Lind at The Washington Post. Americans are "voluntarily spending an extra ...

Mark Kelly's four years in the Senate came after a career in the military, at NASA and on front lines of advocacy for gun ...

Mark and Scott Kelly, brothers was are both veterans of four spaceflights, join CBS Mornings to discuss today's SpaceX ...

Before Mark Kelly emerged as one of the lead contenders for VP on the Democratic ticket, the former astronaut earned more than a million dollars on the speaking circuit.

PHOENIX - Mark Kelly’s first campaign for office was decided by a coin toss. His twin brother, Scott, also wanted to be student congress president at their suburban New Jersey high school. It ...

Identical twins Mark Kelly, left, and brother Scott, right, are veterans of multiple spaceflights. Scott Kelly lived aboard the International Space Station for 340 days in 2015-16. NASA ...

President Donald Trump’s transportation secretary, Sean Duffy, has ordered NASA to build a nuclear reactor on the moon, just ...

June 21, 2011 -- Mark Kelly, the astronaut husband of Rep. Gabrielle Giffords, announced today he is retiring from NASA to spend time with his wife and write a memoir with her.