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

In March 2016 NASA astronaut Scott Kelly returned to Earth after a historic 340-day stint on the International Space Station a changed man – his time in orbit had altered part of his DNA.

Astronaut Scott Kelly and cosmonaut Mikhail Kornienko ended a record-setting 340-day stay in orbit with a fiery Super Tuesday plunge to Earth, settling in a jarring rocket-assisted touchdown on ...

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 ...

Former NASA astronaut Scott Kelly knows a thing or two about isolation. In 2016, Kelly became the first American to spend 12 consecutive months in space when he completed a 340-day stint on the ...

NASA astronaut Scott Kelly (R), member of the 43 International Space Station crew, and his twin brother Mark pose after a news conference at Baikonur cosmodrome March 26, 2015.

The Soyuz capsule carrying Scott Kelly and his 340-day roommate, Russian cosmonaut Mikhail Kornienko, landed in Kazakhstan Wednesday. The astronaut arrived back in the U.S. early Thursday, via ...

Kelly, 56 was always the little kid’s heroic vision of an astronaut: brave, stoic, and strong. He could withstand anything, and did—including 340 consecutive days in space, the American record.

Kelly knows that duty on the space station can mean fixing the toilet one week and being out on a spacewalk the next week. Scott, 51, and his twin brother, retired astronaut Mark, will both be ...

Astronaut Scott Kelly said today he's excited to return to Earth to see his family but added he has enough stamina to "go another year" living in space.

At a young age, Scott Kelly dreamed of being a test pilot and then an astronaut rocketing into space. He did it and apparently liked it so much up there, he never wanted to come home.