Sunshine (2007)

[MasterXeus]

Originally Posted by MacDaddyOJack

Don't get me started on "realistic". For one thing, you would instantly freeze when vaulting through space with no suit (absolute zero). And if you didnt, your body would explode due to the pressure differences. I'd be more inclined to believe aliens existed at the sun before traveling from one airlock to another with no suit!

No your body will not explode. Your tissues (skin, heart, etc...) would expand because of the boiling fluids, but not explode.

You would not freeze instantly.
Because there is no air pressure to keep your blood and body fluids in a liquid state, the fluids would "boil." This would cause your body to lose heat energy rapidly, the fluids would freeze before they were evaporated totally. It would take from 30 seconds to 1 minute. So it is possible to travel between air locks with no suit.

http://science.howstuffworks.com/question540.htm