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They do not. Astronauts in space are effectively weightless, so for them, there is no up or down; the idea of "upright" has no meaning.

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Q: Why do astronauts sleep upright?
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What do astronauts do on a mission?

the things that astronauts do on a mission is sleep learning how to fly a space shuttle


How many hours of sleep do astronauts usually get each night?

i think that astronauts usually get about six hours of sleep every night when they are in space.


What kind of equipment do astronauts use to sleep?

Astronauts sleep in a vertical position by strapping themselves into sleeping bags that are attached to the walls of they're sleeping compartment.


Do astronauts require less or more sleep while they are in space?

Astronauts require less sleep than normal; Theoretically because the astronauts always have to be alert in a dangerous setting like space.


How do astronauts spend their days in space?

Eat sleep and explore my friend

Related questions

How do astronauts sleep in a spacecraft?

They sleep straped to the wall


Do astronauts sleep?

yes they do


Do astronauts sleep in space?

Yes, they do.


What do astronauts do for relaxation in space?

they sleep


What do astronauts do on a mission?

the things that astronauts do on a mission is sleep learning how to fly a space shuttle


What drug do the astronauts take for sleep?

sulfur


How do astronots sleep in space?

Astronauts in space sleep in sleeping bags that are secured to a wall or a bunk, using velcro straps to stay in place. They can sleep in any orientation in microgravity. Some astronauts also use sleep masks and earplugs to help block out light and noise.


How many hours of sleep do astronauts usually get each night?

i think that astronauts usually get about six hours of sleep every night when they are in space.


What kind of equipment do astronauts use to sleep?

Astronauts sleep in a vertical position by strapping themselves into sleeping bags that are attached to the walls of they're sleeping compartment.


What is it when you have to sleep upright?

When your on a plane or traveling a long way in the car


Where do astronauts sleep in space rockets?

Astronauts in space rockets typically sleep in designated sleeping quarters that are usually small, private sleep pods or sleeping bags attached to a wall. These sleeping areas are specially designed with restraints to keep astronauts in place during sleep in the microgravity environment of space.


Do astronauts require less or more sleep while they are in space?

Astronauts require less sleep than normal; Theoretically because the astronauts always have to be alert in a dangerous setting like space.