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Survival in Space Unprotected is Possible

52 点作者 sethito大约 12 年前

9 条评论

lmkg大约 12 年前
Explosive decompression won't happen in space, under normal circumstances. It is a thing that can happen, but it requires a drop larger than 1atm -&#62; 0atm to overcome the strength of human skin. People have literally exploded from a pressure drop, but they were deep-sea divers in a decompression chamber that lost integrity and went from 9atm -&#62; 1atm[1], a drop 8x larger than going from sea-level atmospheric pressure to vacuum.<p>From the article, it sounds like some of the symptons resemble "the bends" divers have when they surface too quickly. The cause of the bends is the change in pressure no longer being sufficient to keep the nitrogen dissolved in your blood, dissolved in your blood. Bubbles in blood veins are bad news.<p>Pretty much all of the issues with vacuum have to do with liquids becoming gases, and unsealed gases wanting to disperse. I have to imagine it's goddamn <i>weird</i> feeling the water evaporate off your eyeballs.<p>[1] <a href="http://en.wikipedia.org/wiki/Byford_Dolphin#Diving_bell_accident" rel="nofollow">http://en.wikipedia.org/wiki/Byford_Dolphin#Diving_bell_acci...</a>
tokenadult大约 12 年前
A famous scene in the 1968 film <i>2001: A Space Odyssey</i> showed this. (The actor, Keir Dullea, almost was badly injured in the shot showing him entering the spaceship airlock without his helmet on, by the way.) But as the article points out, such survival is only<p>"for at least a couple of minutes. Not that you would remain conscious long enough to rescue yourself, but if your predicament was accidental, there could be time for fellow crew members to rescue and repressurize you with few ill effects."<p>So be sure to practice a buddy system if you are going into outer space without full protective gear on at all times. There's a reason that the full title of the article submitted here is "Survival in Space Unprotected Is Possible--Briefly."
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kyllo大约 12 年前
As a dog lover, their descriptions of the animal subjects studies they did made me cringe.<p>&#62;During their exposure, they were unconscious and paralyzed. Gas expelled from their bowels and stomachs caused simultaneous defecation, projectile vomiting and urination. They suffered massive seizures. Their tongues were often coated in ice and the dogs swelled to resemble "an inflated goatskin bag," the authors wrote.<p>Horrible. If this knowledge is going to actually directly save human lives, and there's no better way, well OK then, but this is just a terrible, horrible thing to do to a creature like a dog or a chimpanzee.
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Gravityloss大约 12 年前
Yarchive comes to help.<p><a href="http://yarchive.net/space/science/man_in_vacuum.html" rel="nofollow">http://yarchive.net/space/science/man_in_vacuum.html</a><p>There has been some real quality writing by certain individuals in the sci.space.* newsgroups about this and many other subjects (many of which are popular myths). You can learn a lot if you're interested in this kind of stuff.
js2大约 12 年前
The lack of oxygen is the biggest problem I'd gather:<p><a href="https://www.youtube.com/watch?v=WTNX6mr753w" rel="nofollow">https://www.youtube.com/watch?v=WTNX6mr753w</a> (hypoxia in an altitude chamber from "how to kill a a human being" documentary)<p>I guess radiation exposure is another big one.
error54大约 12 年前
What the article fails to mention is that space is cold. Really, really cold averaging -454.81 Fahrenheit[1] making concerns about oxygen or water pressure irrelevant. The article should have been called "Survival in Vacuum Unprotected Possible."<p>1 - <a href="http://imagine.gsfc.nasa.gov/docs/ask_astro/answers/980301b.html" rel="nofollow">http://imagine.gsfc.nasa.gov/docs/ask_astro/answers/980301b....</a>
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Houshalter大约 12 年前
Wtf is with the only two animal experiments being on dogs and chimps? I am ok with animal research, but on dogs? Or chimps which are closer to humans than any other animal? This research isn't even necessary. Everyone already knew going into the vacuum of space was bad.
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ricardobeat大约 12 年前
Looks like Battlestar Galactica got it right then.
jesseb大约 12 年前
They seem to have forgotten to mention the fact that the radiation levels would exceed lethal dosages in a matter of seconds.
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