When you are floating in the middle of space nowhere near a planet or anything, and then you take your space helmet off, what happens? Does your head explode from the internal pressure? Or does it expand more gradually like in Total Recall. I figure it would swell up faster than that though, as Mars at least has SOME atmospheric pressure. But with none whatsoever in space, I would THINK it's an instantaneous explosion, but of course I don't know. Or would you freeze to death first? How would death actually happen, (besides the anoxia). Would you shatter, or still be a corpse? I mean I've seen it happen in the movies but I can't trust them for scientific accuracy and am dying to know. I usually like to find things out by experiment but in this case I'll just ask because my space shuttle is at the shop.