sentences:  The establishment of the UK Space Agency and the UK Space Life and Biomedical Sciences Association (UK Space LABS) see the development and application of the principles of astronautical hygiene as an important means to protect the health of astronauts working (and eventually living) in space.Cleaning and waste disposal issues arise when dealing with low gravity environments.On the International Space Station, there are no showers, and astronauts instead take short sponge baths, with one cloth used to wash, and another used to rinse.