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

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 ...

Astronaut Scott Kelly and cosmonaut Mikhail Kornienko are making final preparations for return to Earth Tuesday evening, closing out a record-setting 340-day stay aboard the International Space ...

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.

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.

Shuttle veteran Scott Kelly first heard about NASA's plans to send an astronaut to the International Space Station for nearly a full year shortly after he completed his third space flight in 2011 ...

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 ...

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 ...

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.

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 ...