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

Mark and Scott Kelly, brothers was are both veterans of four spaceflights, join CBS Mornings to discuss today's SpaceX ...

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 ...

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 ...

Kelly returned from the International Space Station on Wednesday, ending a 340-day mission that set a U.S. record. It took him a full day to get back home from the landing site in Kazakhstan to ...

Astronaut was greeted in Houston by his twin brother, Mark Kelly. — -- Astronaut Scott Kelly arrived in Houston early this morning where he was reunited with his family after a whirlwind year ...

While Scott was in space, his telomeres actually lengthened. Most of the changes, including the lengthening of the telomeres, faded away after Scott’s return to Earth in March 2016.

An image posted to Astronaut Scott Kelly's Twitter account with the text "#EarthArt A single pass over the #Australian continent. Picture 11 of 17. #YearInSpace" on Oct. 12, 2015.

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 ...

NASA astronaut Scott Kelly returned to the U.S. on Thursday after spending nearly a year in space. Now that Kelly is home, his journey is just beginning.