What Mike Mullane remembers most clearly about having his first bowel movement in space is the blast of cold air greeting his ...

Spacesuit-clad NASA astronauts have to go to the bathroom in diapers. But a new invention by Dr. Thatcher Cardon may change space travel forever.

The next time you go number two, you should take a peek in the toilet. (You should actually be doing this after every bowel movement, doctors say.) Antonio Hugo Photo / Getty Images While certain ...

In the next few years, NASA plans to return to the moon. We know which rocket the astronauts will launch atop, what capsule they'll be cramped in, and how they might land on the lunar surface. But ...