Would You Pop in Space?

Humans don't explode in space. ... According to Richard Harding's book "Survival in Space," the blood vessels can withstand the internal pressure without exploding. Humans do die if left in outer space without a space suit. But they die for the same reason as people who are left too long underwater: lack of oxygen.

Do you actually explode in space?

The vacuum of space will pull the air from your body. So if there's air left in your lungs, they will rupture. Oxygen in the rest of your body will also expand. You'll balloon up to twice your normal size, but you won't explode.

Would your blood boil in space?

In space, there is no pressure. So the boiling point could easily drop to your body temperature. That means your saliva would boil off your tongue and the liquids in your blood would start to boil. All that bubbly boiling blood could block blood flow to vital organs.