There are simulators that can mimic 1/6G, but if you *really* go - bring a spacesuit.
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Eden say: We would not be able to breath in such different atmosphere than Earth's or survive the temperature fluctuations of space. It is beyond human capabilities
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Jack say: no, because they wont be able to breathe and it would be cold as hell
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Dan say: No. You are largely liquid, and with no atmospheric pressure, water would boil well below your body temperature. "Freeze Drying" is a practical application of this principle.
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coronet_rt_1969 say: An astronaut could hold their breath but would implode due to the vacuum effect.
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Shawn say: Without a spacesuit and no enclosure to keep your body within a pressurized environment, the pressure that your body is exerting outward (which is at least as high as the atmospheric pressure of about 15 LBS/square inch), even if your skin did not break, your eyeballs might not stay in the head for long, and your lungs would probably try and find their way outside somehow, perhaps along with the big breath that you took. In either case, herniation would likely result everywhere in your body and blood vessels would break in at least a few places. Some would tear in your brain causing hemorrhage as the brain tried to come out of your eye sockets. Your ear drums would burst and probably bring with them some of the air in your lungs along with other tissue and blood. It is unlikely that the cardiovascular system could handle such conditions. The cold would not be as much of a problem. Your body heat would radiate though into the dead of space, but there would have to be particles with a heat capacity for transfer from your body for you to freeze immediately and solar radiation would be unshielded by an atmosphere where every it touched your body. Your body would probably be propelled more from newton's 3rd law in response to the ejection of body fluids from areas that were punctured or gave way more than anything that your legs were trying to do at the time.
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