NASA Spokeswoman emphasized the Space X rescue mission of stranded astronauts would not have been a success without President ...

NASA spaceman Don Pettit demonstrated the tricky task of sipping from a special mug in microgravity on the International ...

Two space missions reached their conclusion: one with a splashdown, the other with a quiet lunar death. And thrilling new ...

Sunita "Suni" Williams had an unexpectedly long stay at the International Space Station after her capsule malfunctioned.

Astronauts also have to adjust to the sensations of water and weight in their limbs, which can limit mobility right after ...

A four-member crew, including NASA astronauts Sunita "Suni" Williams and Barry "Butch" Wilmore, left the ISS early Tuesday on ...

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NASA astronauts are returning to Earth after nine months in space. Experts have said a prolonged period in space can come ...

Butch Wilmore and Suni Williams left the International Space Station after nine months in space, checking out with two other ...