How do astronauts brush their teeth? Do they eat the toothpaste?
How do astronauts brush their teeth? "Astronauts use the same toothpaste as on Earth and can even select their preferred brand. Instead of rinsing with water and then spitting into a sink, astronauts spit toothpaste into a towel. Recently, astronauts have been using edible toothpaste to reduce water waste. With long-duration flights, dental care is [...]