Williams and Wilmore both arrived at the ISS last June, aboard the first crewed test flight of Boeing's Starliner spacecraft.

During the Thursday spacewalk, the two astronauts, Sunita Williams and Butch Willmore, will swab the Space Station for microorganisms.

After a gap of more than a year, NASA successfully resumed spacewalks outside the International Space Station on Thursday.

One of NASA’s two stuck astronauts got a much welcomed change of scenery Thursday, stepping out on her first spacewalk since ...

NASA's Nick Hague and Suni Williams will service the X-ray telescope attached to the ISS during a 6.5-hour-long spacewalk today (Jan. 16). Watch it live.

Two NASA astronauts will perform the year's first spacewalk today (Jan. 16), and you can watch the action live. Nick Hague and Suni Williams are scheduled to venture outside the International ...

Space missions lasting months can result in muscle atrophy, bone density loss, and fluid redistribution, all of which are amplified by microgravity.

Play the USA TODAY Daily Crossword Puzzle. This was the eighth spacewalk for Williams and the fourth for Hague in the span of their careers. It's been awhile since NASA astronauts have preformed a ...

NASA astronauts Sunita Williams and Nick Hague embark on a crucial spacewalk outside the ISS, marking Williams' eighth ...