Sleeping in Outer Space Travel - Rare Photos...
Sleeping in space is not easy thing. Some astronauts find it difficult to adapt themselves to weightlessness and in the beginning have to take sleeping pills. Later, however, everything becomes normal and their sleep is just as deep as that of any other healthy person after a hard day's work. Physiologically the purpose of sleep is the same both in space and on Earth - to give rest to the brain and feed it with oxygen. In outer space due to weightlessness the blood rushes to the head, the vessels dilate and the process takes place faster. As a rule, sleep is of shorter duration in space. Although the daily routine provides for eight hours sleep, the astronauts fell well rested after six hours. No beds are needed in spacecraft. The spaceship crew members rest in sleeping bags strapping themselves. Some prefer to sleep on the ceilin, because there is more room although in weightlessness the difference between floor and ceiling is relative. When journalists ask astronauts about their ...