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 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 ...

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 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 ...

If NASA had allowed it, astronaut Scott Kelly would have loved to climb out of the Soyuz capsule after landing on Tuesday and walked on his own, Kelly’s brother, Mark, said during a news ...

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 ...

Scott Kelly is retiring after his year-long mission in space. — -- After spending a year in space, astronaut Scott Kelly plans to retire next month, NASA announced in a press release today ...

Kelly says his year in space took a physical toll. — -- Scott Kelly, who recently returned to Earth after almost a year in space, plans to share more about the toll his time in orbit has ...

Astronaut Scott Kelly's First Day Back on Earth Kelly, who is the American record holder with 340 days in space, returned to Earth lighter, taller and younger.

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.