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

Scott Kelly takes a selfie inside the International Space Station.Image: nasaThe intensive scrutiny of Kelly's body revealed a lot, but there's only compelling evidence for one human: Kelly.

After living on the International Space Station for 340 days, astronaut Scott Kelly says it was easier to spend nearly a year in space than to get used to gravity again back on Earth. Kelly is ...

Astronaut was greeted in Houston by his twin brother, Mark Kelly. — -- Astronaut Scott Kelly arrived in Houston early this morning where he was reunited with his family after a whirlwind year ...