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

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) ...

Astronaut Scott Kelly will become the first UP.SE. astronaut to spend a year in space. He will help NASA collect data on the effects of long term spaceflight on a human. He will also free up seats ...

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 ...

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 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.

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 ...

Even Scott Kelly -- a NASA astronaut who just returned to Earth after 340 days on the International Space Station -- is on board with augmented reality. Kelly tested out the Microsoft HoloLens, an ...

NASA astronaut Scott Kelly, who has spent more time in space than any other American, retired from the agency on April 1, 2016. (Image credit: NASA) Click here for more Space.com videos ...

Astronaut Scott Kelly, who recently completed an unprecedented yearlong mission aboard the International Space Station and holds the American record for most days spent off Earth, will retire from ...

Scott Kelly, a retired U.S. astronaut, spent 520 days in space over four missions. Working in outer space is a lot like working on earth, but with different challenges and in closer quarters.

Astronaut Scott Kelly has previously reported his vision changing in space, a likely result of fluid shifting in micro-gravity and putting pressure on his optic nerves.