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 ...

PETER SAGAL, HOST: And now the game where very accomplished people try their hand at accomplishing something else. It's called Not My Job. At a young age, Scott Kelly dreamed of being a test pilot ...

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. (REUTERS/Maxim Zmeyev) ...

If anybody knows, it's Scott Kelly, an astronaut who completed both a six-month and a yearlong mission on the space station. Thanks for joining us. SCOTT KELLY: My pleasure.

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.

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 ...

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.

In a few hours, NASA astronaut Scott Kelly is due to be back on Earth. Kelly has completed a nearly yearlong mission on the International Space Station, the longest any U.S. astronaut has been in ...

Scott’s twin Mark Kelly, who retired from the astronaut corps in 2011 and kept his feet firmly planted on the ground during his brother’s latest flight, is also undergoing many of the same tests.