NASA/ Please don't squeeze the Astronaut/by Don Pettit (Astronaut)
Taking human anatomy into account, the toilet facilities on space station have an architecture that expertly aligns the purpose to the environment (such trifles as a toilet seat are not needed when you are weightless). The Soyuz spacecraft is a different matter. The toilet on Soyuz is simple, and will get the job done with minimum mess. But relaxing it is not. In the cramped quarters your crewmates politely keep their backs turned, with plugged noses. Fortunately, we only live in the Soyuz for two days before we rendezvous and dock with the space station. After that we can live, and relieve ourselves, in semi-private style.
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