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Surviving in Space Without a Spacesuit
Geoffrey writes "The recent movie Sunshine features a scene (echoing the famous scene in 2001: a Space Odyssey) in which two astronauts have to cross from one ship to another without spacesuits. But, can you survive in space without a spacesuit?
Morgan Smith, writing in Slate, asks whether this is realistic, and concludes: "Yes, for a very short time.""
In the episode where they were experimenting with a captured ship, T'lk and O'Neill were flung out to Jupiter and left without a way to get home.
Carter's dad, herself and Daniel are able to rescue them but the two have to eject from their ship and float in space for a few seconds before the ring transport can be used.
I do believe that the two had a spacesuit of some type on but not one that was designed for space. More of a general cover suit.
We will bankrupt ourselves in the vain search for absolute security. -- Dwight D. Eisenhower
The conscensus seems to be consciousness for 10-15 seconds, no serious injury for 60 seconds to 2 minutes.
SJW: Someone who has run out of real oppression, and has to fake it.
But the odds of being picked up by a passing space ship in that time are two to the power of 2079460347 to one against.
Technoli
Maybe, but once they retrieve you, if your clothing needs to be removed for any reason (e.g. medical), you're going to have shrinkage like you just did the polar bear plunge... and all in front of your unreasonably hot female costar. :(
The Schwartz space ain't from Spaceballs.
Would You Freeze?
No.
A couple of recent Hollywood films showed people instantly freezing solid when exposed to vacuum. In one of these, the scientist character mentioned that the temperature was "minus 273"-- that is, absolute zero.
But in a practical sense, space doesn't really have a temperature-- you can't measure a temperature on a vacuum, something that isn't there. The residual molecules that do exist aren't enough to have much of any effect. Space isn't "cold," it isn't "hot", it really isn't anything.
What space is, though, is a very good insulator. (In fact, vacuum is the secret behind thermos bottles.) Astronauts tend to have more problem with overheating than keeping warm.
If you were exposed to space without a spacesuit, your skin would most feel slightly cool, due to water evaporating off you skin, leading to a small amount of evaporative cooling. But you wouldn't freeze solid!
Joachim
People don't write Manifestos any more -- what's going on in this world? [Frank Zappa]
It would take nearly forever for you to cool off that much, you would explode due to pressure differential
No, you would not. Standard air pressure is about 15 PSI. Thus, being in vacuum can never apply more than 15 PSI to your internal organs, unless you came from a substantially pressurized environment.
SCUBA divers experience sudden pressure changes in the realm of 15 PSI all the time. They don't "explode," they just get the bends. It's something you want to avoid, definitely, but you aren't going to blow your guts just because the ambient pressure drops by 15 PSI.
A long time ago I took a pressure chamber ride at NASA to 27,000 ft. I lasted about 15 sec until uselessness (the crew master didn't let us go all the way to LOC), and 27,000 is not a particularly extreme altitude. Generally, 50,000 ft is considered the altitude at which the partial pressure of oxygen is no longer adequate to maintain consciousness. You can survive up to about 80,000 if you "pressure breathe", i.e have a rig that forces oxygen into your lungs at a lightly higher pressure than ambient, but not enough to bust your lungs.
And as TFA pointed out you will embolize if you hold your breath above that more or less 80,000 ft altitude.
So if the acronum YMMV ever applies, it's here.
Give a man a fish and you have fed him for today. Teach a man to fish, and he'll say "WHERE'S MY FISH, YOU IDIOT?"
..hear your frozen dick fall off.
[The author of this post understands the negligible effects of loss of heat solely through radiation in extremely short time periods, but encourages the reader to take a break and try to laugh].
Couple of rolls sounds like a reasonable makeshift pressure suit.
Engineering is the art of compromise.
I've done 4 spacewalks and during vacuum chamber training we open our suit purge valve, allowing the pressure in the suit to drop a bit (from nominal 4.3 psi) and I did feel the sensation of the saliva bubbling; it is similar to the sensation of soda pop on your tongue. I haven't seen the movies mentioned (other than 2001), but my guess about vacuum exposure is that you are more likely to be injured by the flying debris (including your own velocity as you impact a wall or whatever) associated with sudden decompression through a hatch than by a very short exposure to 0 psi. During one chamber run, I had a water line poppet valve stick open when I disconnected from the chamber wall. The water stream broke up into droplets that immediately froze, producing an impressive shower of ice particles. Over about 5 to 10 seconds, the icing point traveled up the water stream and formed a clump around the poppet valve, sealing the leak. Oh, by the way, I tried whistling while EVA and even the nominal suit pressure is too low to produce an audible sound.