There are many obstacles to overcome before humans can set foot on Mars, including problems surrounding launch mass and ...

President Donald Trump and Elon Musk announced this week that SpaceX, the space exploration company founded by Musk, will be ...

Sunita “Suni” Williams and Barry “Butch” Wilmore, who have spent an unexpected eight months on the International Space ...

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

Where the astronauts sat in the Apollo Lunar Module may have profoundly impacted the way the experience of walking on the ...

Astronauts Butch Wilmore and Suni Williams are conducting a spacewalk outside the International Space Station to remove ...

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

The astronauts on the Shenzhou-19 mission at Tiangong Space Station used semiconductor catalysts to convert carbon dioxide ...

"NASA and SpaceX are expeditiously working to safely return the agency's SpaceX Crew-9 astronauts Suni Williams and Butch ...

While Suni Williams and Butch Wilmore’s situation is unusual, their return trip will be pretty routine, as they were already ...

NASA's two stuck astronauts are taking their first spacewalk together, exiting the International Space Station almost eight ...

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