Quote:
Originally Posted by [1ponders]
Nothing. Apart from you'd die. Your exposed wet surfaces, mouth, eyes, nasal passages etc would dry out and you'd want to keep a tight clench on your sphincter and yes the air would be sucked from your lungs if you opened your mouth, but that is all.
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True in regard to dissolved gases in your fluids, and trapped gas in spaces - but you need to think of your body water too - at 63000 feet above sea level, the vapour pressure of water hits 1 atm at the 37 deg C mark - so water boils at 37 deg (or lower as you climb) - bad news for us warm blooded buggers who are literally full of water! This is called ebullism - experiments have been done with monkeys years ago, exposing them to vacuum conditions, and then recompressing them, apparently they seemed near unscathed if they weren't exposed too long....