If you were in space without a space suit, would you die as soon as soon as you breathe out or die from the temperature?

Question: If you were in space without a space suit, would you die as soon as soon as you breathe out or die from the temperature?
- Keywords:
  breathe,
  die,
  space,
  temperature
Asked by Delta Fox1 to Chris, Georgina, Kristi, Laura, Livia on 15 Nov 2017.
- Chris Tyler answered on 15 Nov 2017:
  
  Probably (obviously nobody has done this experiment!) the pressure and hypoxia will kill you before temperature because even in extreme cold temperatures the body can survive for a while as there is a bit of a delay in actual body temperature reductions
- Georgina Hazell answered on 15 Nov 2017:
  
  Yes I agree with Chris. It’s the lack of oxygen and change in pressure that will probably kill you first…
- Laura Ginesi answered on 15 Nov 2017:
  
  Not sure I’d want to be in space without a space suit!
  
  I agree with the others. In theory, you might loose consciousness in 10-15 seconds because of lack of oxygen; the low pressure would make the body and gases expand – damaging the lungs – but you might not freeze immediately although you would loose heat really quickly.
  
  Not sure I’d like to try testing the theory, though 🙂 good question!
- Livia Carvalho answered on 15 Nov 2017:
  
  Agree with Chris!