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

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

For 340 days, Scott Kelly circled the Earth aboard the International Space Station, gathering data about himself. He drew blood from his arms. He saved his urine. He played computer games to test ...

Scott Kelly, who was the first American astronaut to spend almost a year in Earth orbit on board the International Space Station, stars in "Never Stop Dreaming," a minute-long film made by ...

-- Astronaut Scott Kelly retired today after 20 years with NASA and spending a year in space. During his career, Kelly completed four separate missions in 1999, 2007, 2010 and 2015, accruing 520 ...