Oh, right. There are no toilets in space. While this may not be a thing you’ve ever thought about, take a moment and really let that sink in. Think about when you are out and about and suddenly in need of a toilet. It’s terrifying. You’re sweating, your heart is racing and all you can do is imagine the worst.
Now think about having to desperately poop…in space. The spacesuit, the tight quarters, and that whole anti-gravity thing; it sounds like an impossible task and suddenly walking on the moon sounds easy.
In the past they have relied on low-residue diets designed to minimize bowels movements, defecation devices, wipes and diapers. But the more their technology improves, and the more they can do in the space, the longer their expeditions will be and they need to figure out how astronauts can poop in comfort.