The Japan Aerospace Exploration Agency (JAXA) believe they've solved the age-old problem of how to shit in space.
The current ISS toilet is a Russian-built, western-style commode that sucks waste away like a vacuum cleaner. Use of that toilet requires practice before heading to space, particularly because an improperly seated user has the potential to create a messy situation.
Clean and easy to use, the envisioned space toilet is designed to be worn like a diaper around the astronaut's waist at all times. Sensors detect when the user relieves him or herself, automatically activating a rear-mounted suction unit that draws the waste away from the body through tubes into a separate container. In addition to washing and drying the wearer after each use, the next-generation space toilet will incorporate features that eliminate unwanted sound and odor.
No offense, JAXA, but that sounds a little like overkill. Here's a much simpler and cost effective solution: shit yo pants! Then put them in a bag, and throw them out the nearest air-lock. Extra points for hitting a passing UFO.
Next-generation space toilet ready in five years [pinktentacle
Thanks to abovedefault and Praveen, who don't need vacuum-diapers because they digest everything. That's right, everything. Even gum.