Most people picture astronauts floating weightlessly through gleaming corridors, and that image is accurate enough during the waking hours. Sleep, though, is a different matter. When the lights go ...

Humans adapt. We live in trackless deserts, on the tops of mountains, in pestilential jungles, in prisons and hospitals. To survive we sleep, for we need sleep like food. We adapt to sleeping in space ...

Astronauts might get a good night of sleep in space with a new test developed at Washington State University. The test strip will allow spacefarers and other late-shift workers to track their ...

Add Yahoo as a preferred source to see more of our stories on Google. On the evening of April 10, four NASA astronauts splashed down in the Pacific Ocean off the coast of San Diego, California, ...