A recent photo of Williams aboard the ISS sparked rumors about her health, restoring the media's habit of prying into the appearance of women astronauts.

It's particularly important to exercise while in space due to the lack of regular force on the muscles and bones, said former astronaut Mike Massimino. "We need that stuff to remain healthy," he said, "especially when you come back to Earth." The ...

NASA doctors are monitoring the second astronaut stranded on the International Space Station — and making sure that he isn’t losing too much weight during his extended stay in space. A NASA employee who is involved in the mission told The Post that Butch Wilmore has also been losing body mass,