Space Toilets

Do you know the question astronauts get asked most often? It's: How do you go to the bathroom in space? There is a toilet on the shuttle. 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 dis- posed of back on Earth. urine is held in a tank, then released into space. The temperature of space is so cold that the urine freezes immediately into sparkling ice crystals. Perhaps some UFO sightings were really Urine Floating Outside!