The Vacuum of Space

Next time you enter interstellar space exposed, just remember you have around 10 seconds of consciousness to get back inside the ship.  This highly pertinent information comes from the fine people at NASA who wrote "Barometric pressure in Bioastronautics Data Book, Second edition, SP-3006"  Other key points to remember, or notes that may assuage some fears: 1) Your blood wont boil; 2) You wont freeze upon contact.  This is due to the fact that space has no real temperature because there's nothing there-- but I wouldn't want to be exposed to those Gamma, IV Rays or anything like that from the Sun.

http://io9.com/5709637/what-would-really-happen-if-you-were-exposed-to-vacuum