This story incorporates reporting from Yahoo, Space on MSN.com and MSN.NASA astronaut Suni Williams set a new record with a ...

Starliner co-pilot Sunita Williams is now the world's most experienced female spacewalker, moving up to No. 4 overall.

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

President Donald Trump took to social media this week to announce he had directed SpaceX CEO Elon Musk to “go get” two NASA ...

NASA astronaut Suni Williams set a female spacewalk record after venturing outside the International Space Station with ...

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

Nasa astronauts Sunita Williams and Butch Wilmore completed a record-setting 5.5-hour spacewalk outside the ISS, adding to ...

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

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

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

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