NASA astronaut Suni Williams says her weight is stable aboard the International Space Station, rebutting tabloid claims that ...

In a video released Monday by NASA, stranded astronaut Sunita Williams, 59, offered a surprising reason for her weight loss ...

"All NASA astronauts aboard the International Space Station are in good health," says the agency's chief health and medical ...

The astronaut appeared to be in good health and spirits following photos of her that recently sparked health scare rumors.

The agency’s top medical official was responding to rumors that Suni Williams had lost an unusual amount of weight during an ...

The astronaut originally arrived at the ISS on June 6 along with Sunita Williams for what was supposed to be just a ten day stay.

"In 65 years of human spaceflight, we've never had to bring somebody back for a medical reason so far," he added. "That's a ...

Another update has been shared on the astronaut stuck in space after she sparked concern over her appearance. Sunita 'Suni' ...

Suni Williams and Butch Wilmore only expected to be in space for about a week. But, more than 150 days later, the two NASA ...

Two astronauts are doing well despite rumors of health issues as they wait to return to Earth, the astronauts and NASA say.

The same can't be said of "space weather" from solar events, which can seriously affect satellites and even passenger planes.