During a five-and-a-half hour spacewalk with her colleague Butch Wilmore, Sunita Williams surpassed former astronaut Peggy ...

Among the objectives of the walk, there was an intriguing scientific objective: The duo swabbed the surface material around ...

Williams, who was on her ninth spacewalk, now ranks fourth worldwide for longest accumulative spacewalking time.

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

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

NASA's two stuck astronauts took their first spacewalk together Thursday, exiting the International Space Station nearly eight months after moving in. Commander Suni Williams and Butch Wilmore removed ...

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

NASA's two stranded astronauts conducted their first spacewalk together Thursday, stepping outside the International Space Station.

The robotic arm delivered NASA astronaut Suni Williams to a worksite during a record-breaking spacewalk at the International ...

NASA astronauts Sunita "Suni" Williams and Barry "Butch" Wilmore have been on the International Space Station since June, ...

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