Authors:

NASA's training philosophy is "no surprises." So what they did is put a simulator on Earth where it looks exactly the same as a shuttle toilet and they put a camera down in the bottom of the opening for solid-waste collection, with a light that basically illuminates your asshole.

Source: www.menshealth.com
NASA's training philosophy is no surprises. So what they did is put a simulator on Earth where it looks exactly the same as a shuttle toilet and they put a camera down in the bottom of the opening for solid-waste