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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.""

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  1. SG-1 had a similar scene by smooth+wombat · · Score: 5, Informative

    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
  2. Imagine drowning if you couldn't hold your breath by elrous0 · · Score: 5, Informative
    This has been dealt with many times before and there is even a case of a NASA tech who was exposed to vacuum in 1966. He lost consciousness in about 12-14 seconds and was regained consciousness without injury after they restored pressure at about 30 seconds.

    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.
  3. Re:Imagine drowning if you couldn't hold your brea by jschrod · · Score: 5, Informative
    From http://www.sff.net/people/Geoffrey.Landis/vacuum.h tml:

    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]

  4. Re:Imagine drowning if you couldn't hold your brea by pclminion · · Score: 5, Informative

    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.