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i think that astronauts usually get about six hours of sleep every night when they are in space.
How many hours does it sleep
Mercury carried one Astronaut, Gemini carried two, and Apollo three
they sleep for 10 hours a day they sleep for 10 hours a day
they need about 6 hours of sleep
Elephants sleep for 2 hours
if you mean how many hours you should sleep in a year it would be 3,650 hours of sleep for a regular year not a leap year
They sleep upto 18 hours a day.
about 10 hours of sleep
you must get atleast 9 hours of sleep
I sleep about 7 to 9 hours a day
Its compulsary for a teen ager to sleep 8 hours..