Two NASA astronauts saw their weeks long mission turn into months and now one of them is responding to tabloid claims about ...

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

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

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

Trump could grant a rare waiver exempting Musk from those laws, a move that has been politically unpopular in the past.

NASA and Russia at odds over cause and severity of the International Space Station's leak risks, including possibility of ...

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"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 ...

Suni Williams and Butch Wilmore, the two NASA astronauts who have been stuck at the International Space Station for more than ...