The life support system installed in the space station helps astronauts live in space for extended periods of time. While in space, the life support system provides oxygen and filters out the carbon dioxide exhaled by the astronauts. In addition, astronauts go through rigorous training regimens to ensure that their bodies can handle the conditions.
Since most astronauts do not spend as much time on their feet while in space as they would on Earth, their hearts have to work extra hard against gravity to move blood around their bodies. As a result, astronauts have to exercise in space each day to maintain strength in their muscles and bones. When it comes to staying clean is space, astronauts use a personal hygiene kit that contains toothbrushes, toothpaste, combs, brushes and shavers. These kits also come with specially formulated soaps and shampoos that do not require the use of water.
In order to keep the space station clean, astronauts must wipe the walls, floors, and windows using a soap that kills germs. There are four trash bins on the Space Shuttle: three for dry trash and one for wet trash. Lastly, when an astronaut goes to the toilet, the solid waste is treated to prevent any bacterial growth, and then it is dried and dumped into space.Learn More
According to Universe Today, astronauts use radio waves to communicate with Earth and between craft in space. While these waves travel at the speed of light, the long distances involved can induce delays in conversation between Earth and astronauts on long-distance missions.Full Answer >
According to the National Aeronautics and Space Administration, astronauts are sent into space to operate the International Space Station, help develop commercial spaceflight, investigate the possibilities of human exploration of deep space, develop new technologies and conduct research in a wide range of scientific fields. Many aspects of scientific studies of the Earth and the rest of the universe are easier to conduct from space.Full Answer >
Astronauts wear space suits, flight suits, maximum-absorbency garments and helmets. They typically wear blue flight suits and tennis shoes during training, and they also wear the flight suits while flying NASA T-38 jets.Full Answer >
As of July 13, 2014, worldspaceflight.com has on record 545 astronauts who have been to space, based on United States Air Force?s (USAF) report. F?d?ration A?ronautique Internationale?s (FAI) reports on this same website, that 539 astronauts have been to space.Full Answer >