NASA makes us proud to be Americans. And even more so, the agency is an engine of discovery and innovation that benefits all ...

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

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

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 ...

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

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

Kelly’s name has arisen as a potential candidate for both president and vice president in the past. Kelly, who was elected to ...

WASHINGTON − Elon Musk and Sen. Mark Kelly, D-Ariz., traded jabs on social media Monday, after the billionaire space entrepreneur called the former NASA astronaut a "traitor" for his recent trip ...

Senator Mark Kelly knows Elon Musk better than most Americans do. Kelly, an Arizona Democrat, is a former NASA astronaut and Navy combat pilot.

NEW YORK -- You would expect a trip to space to be transformative, but NASA says it can lead to permanent DNA changes. The space agency studied the DNA of twin astronauts Scott and Mark Kelly.