1. Confused sleep and strange sleeping position. Astronauts sleeping in space is indeed \"confused sleep\
Black and white is black and white, which means that astronauts travel around the earth in the sky, and the sunrise and sunset in space are determined by the time the spacecraft circles the earth. Sometimes the sunrise and sunset alternated many times in 24 hours, and the astronauts could not follow the living habits of \"sunrise and sunset\" on Earth, so they had to arrange work and sleep by the hour mechanically.
The strange sleeping position means that astronauts can't find the feeling of \"lying\" in the weightless environment of space. In the Earth's gravity environment, people are used to setting the direction of gravity as \"down\" and the direction of \"day\" as \"up\
Therefore, there is no \"lying down\" when sleeping. Because they can sleep standing up, lying down, or on their stomachs, astronauts can sleep floating in a capsule, hanging from a wall, tied to a bed, hanging from a beam, or leaning against a table.
2. Strange face washing and brushing. Because of the weightless environment of space, washing your face, brushing your teeth, shaving, cutting your hair and washing your clothes, which may seem simple on Earth, becomes complicated and troublesome in space.
Astronauts wash their face and brush their teeth more peculiar, in order to prevent water from floating everywhere, generally wipe their face with a wet towel as a face wash; When you brush your teeth, dip your finger in the toothpaste and rub it back and forth a few times, and then wipe your teeth with a wet towel. If you brush your teeth like you do on the ground, toothpaste bubbles will fly all over the cabin.
Astronauts generally use electric razors to shave, and they must be careful when using them to leak out of the edge of the razor. The space capsule is very small, environmental issues are extremely important. If tiny bits of scruff float in the cockpit, they can be difficult to clean up.
Space haircuts are not easy, so both men and women have to cut their hair shorter and shorter before they go up. But after a long flight, hair grows back. The astronauts had to work together to help each other, one cutting hair and one vacuuming the clippings.
3. \"Sauna Room\" and \"bath bag\". Bathing in space is even more troublesome. Astronauts need to keep their feet in a fixed loop, or their floating bodies will turn over and over when the water hits them. The water in the state of weightlessness is all small droplets of water, which is easy to choke and even choke to death.
So when showering, astronauts also wear respirators and eye shields. After taking a bath, the sewage on the body will not automatically flow down, and the pump needs to be pumped away together with air. Water stuck on the canvas must also be pumped away. Take a bath, the real bath time is only 15 minutes, can clean sewage and other preparation work takes 45 minutes.
Later, scientists made some improvements to the space bath. The bathroom on the Russian Mir space station, for example, is like a sauna. The astronauts go in, warm up, sweat, and then scrub with a damp towel. Inconvenient and uncomfortable, the \"sauna\" was transformed into a sleeping bag-like device.
When the astronaut takes a bath, there is water and bath liquid in the bag, and after washing, the extraction fan under the bag can be opened to pump away the dirty water. The bathroom on the US space shuttle is a bathing cover, and there is also an extraction fan under the cover. When astronauts take a bath, they turn on the shower faucet and exhaust fan, and water is sprayed from above and water is pumped from below, creating a shower effect similar to that on the ground.