விண்வெளி வீரர்கள் விண்வெளி ஓடத்தில் எப்படி உறங்குகிறார்கள் - அரிய புகைப்படங்கள்.

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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.

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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.

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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.

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When
journalists ask astronauts about their dreams, they say they see only
"earthly" dreams. Russian astronaut Valentin Lebedev, who was on a
211-day mission, admitted: "As a rule, neither in orbit, nor later on
Earth did I see any dreams about space".

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During
early flights in space orbital station Russian astronaut Vitali
Sevastyanov noticed that, if your arms are free in sleep, they fold in
front of the face by themselves and "float". Therefore, it is best to
swaddle oneself like a baby. That is why the space crews are provided
with sleeping bags.

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