Do you Know the question astronauts get asked most often? Its “How do you go to bathroom in space?” There is a toilet on the shuttle (Obviously! It should be).
Astronauts strap themselves to it so they won’t float off. Water isn’t used to flush waste products away because it doesn’t flow in weightlessness. Air is used instead. It sucks the waste away just like a vacuum cleaner. Solid waste is collected and disposed off back on Earth. Urine is held in a tank, then released into space. The temperature of space is so cold that the urine immediately freezes into sparkling ice crystals. Perhaps, some UFO sightings were really urine floating outside.
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