How Would a Body Die in Outer Space?

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Discussion Overview

The discussion revolves around the physiological effects on a human body exposed to the vacuum of outer space without a protective suit. Participants explore various scenarios regarding how death would occur, including potential freezing, suffocation, and other biological responses.

Discussion Character

  • Exploratory
  • Debate/contested
  • Technical explanation

Main Points Raised

  • One participant suggests that a human would lose consciousness after about 30 seconds and subsequently die from suffocation.
  • Another participant mentions that under low pressure, air trapped in the lungs could expand, potentially causing severe damage to lung tissues, especially if the person is holding their breath.
  • There is a claim that blood would boil or vaporize in the vacuum, which is challenged by another participant who argues that bodily fluids are contained by skin and not directly exposed to vacuum.
  • A participant references an external article for further information on survival in space without protection.

Areas of Agreement / Disagreement

Participants express differing views on the sequence of biological events and the effects of vacuum on the human body. Some agree on the loss of consciousness and suffocation, while others contest the notion of blood boiling in space.

Contextual Notes

There are unresolved assumptions regarding the exact sequence of physiological responses and the conditions under which various effects occur, such as the impact of holding one's breath during exposure to vacuum.

Who May Find This Useful

Writers, researchers, and enthusiasts interested in the effects of space exposure on the human body may find this discussion relevant.

mf3201d
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I'm doing research for a sci-novel I'm writing.

I've read various answers to this question, but, how would a human body die in outer space if it were jetisoned from a ship, with no protective suit?

Would it freeze to death? Suffocate? Explode? All of the above?

And what's the sequence of biological events?
 
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bio4ata said:
Under extremely low pressure air trapped in the lungs expands, tearing the tender gas-exchange tissues. This is especially grave if you are holding your breath or inhaling deeply when the pressure drops.
While this is true, your lungs are no longer of any use in the few minutes you have left to live.
 
DaveC426913 said:
While this is true, your lungs are no longer of any use in the few minutes you have left to live.

I've heard that your blood would essentially boil, or vaporize. Is this true?
 
gabrielh said:
I've heard that your blood would essentially boil, or vaporize. Is this true?
No. Your fluids are contained by your skin; they are not exposed directly to vacuum.
 
See also another thread: [thread=300079]This first thing that Kills a human in Space?[/thread].
 
DaveC426913 said:
No. Your fluids are contained by your skin; they are not exposed directly to vacuum.

Thank you for the clarification.
 

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