Williams was accompanied by fellow astronaut, Butch Wilmore, on her ninth spacewalk. It was Wilmore's fifth spacewalk.

Plus: Bringing astronauts back from the ISS, fixing hearts with space-grown cells, why your kids need to touch grass and more ...

The four American astronauts aboard the ISS, including the Boeing Starliner crew, spoke to USA TODAY in an exclusive interview Tuesday.

NASA astronauts Sunita Williams and Butch Wilmore, stranded in space for eight months, conducted their first spacewalk.

NASA and its international partners have approved the crew for Axiom Space’s fourth private astronaut mission to the International Space Station, launching from the agency’s Kennedy Space Center in ...

NASA astronauts Suni Williams and Butch Wilmore completed a spacewalk Thursday while awaiting their delayed return to Earth.

NASA’s two stuck astronauts took their first spacewalk together Thursday, exiting the International Space Station almost ...

The taxpayer-funded news outlet NPR contradicted its own reporting Wednesday on astronauts stranded in the International ...

The vice president leading Boeing's Starliner spacecraft unit, Mark Nappi, has left his role in the program and been replaced ...

"I have just asked Elon Musk and SpaceX to 'go get' the 2 brave astronauts who have been virtually abandoned in space by the ...

Starliner co-pilot Sunita Williams is now the world's most experienced female spacewalker, moving up to number four overall.