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

Investments, book deals and speaking engagements make former astronaut Mark Kelly one of the wealthier members of the US ...

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 Kelly, former Navy Captain and NASA astronaut, running for the late Sen. John McCain's Senate seat in Arizona, discusses gun control, climate change and impeachment.

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

Senator Mark Kelly (D-AZ) is in the running to be a vice presidential candidate. Here's what we know about his policies for ...

Kelly is married to former Rep. Gabrielle Giffords, an Arizona Democrat. The couple became outspoken advocates for tighter gun-control laws after Giffords was seriously wounded in a mass shooting ...