NASA astronaut Suni Williams has retired from the agency after 27 years of service, including one nine-month stint when she ...

"Suni Williams has been a trailblazer in human spaceflight, shaping the future of exploration through her leadership aboard ...

NASA's Suni Williams — one of two astronauts stuck for months at the International Space Station — has retired ...

NASA astronaut Suni Williams, who famously stayed in space for an extended nine-month visit after problems with an ...

As we prepare for missions beyond Earth orbit, one crucial challenge remains: keeping astronauts healthy in microgravity.

Buzz Aldrin, the second man and only one of 12 to ever walk on the moon, turns 96 today. He's just one of four living ...

Veteran NASA astronaut Suni Williams announced her retirement Tuesday. Her extended mission to orbit due to the troubled ...

Astronauts of the future may be radically different from the rest of us in physiology and psychology. So, to what extent ...

SpaceX guided the capsule to a middle-of-the-night splashdown in the Pacific near San Diego, less than 11 hours after the ...

CAPE CANAVERAL, Fla. -- NASA’s giant new moon rocket headed to the launch pad Saturday in preparation for astronauts’ first ...