What will happen if a human is thrown in vacuum space without space suits, will his body explode?

Humans exposed to a vacuum will lose consciousness after a few seconds and die of hypoxia within minutes, but the symptoms are not nearly as graphic as commonly shown in pop culture. Blood and other body fluids do boil when their pressure drops below 0.9 psi, the vapor pressure of water at body temperature. This condition is called ebullism.

The steam may bloat the body to twice its normal size and slow circulation, but tissues are elastic and porous enough to prevent rupture. Ebullism is slowed by the pressure containment of blood vessels, so some blood remains liquid. Animal experiments show that rapid and complete recovery can occur for exposures shorter than 90 seconds, while longer full-body exposures are fatal and resuscitation has never been successful.

Decompression sickness, also known as 'the bends' arises from the precipitation of dissolved gasses into bubbles inside the body on depressurization and would be severe in space. Other rapid decompression damage can be much more dangerous than vacuum exposure itself. Even if the victim does not hold his breath, venting through the windpipe may be too slow to prevent the fatal rupture of the delicate alveoli of the lungs.

Eardrums and sinuses may be ruptured by rapid decompression, soft tissues may bruise and seep blood, and the stress of shock will accelerate oxygen consumption leading to hypoxia. Injuries caused by rapid decompression are called barotraumas. A pressure drop as small as 1.9 psi from normal (14.7 psi), which produces no symptoms if it is gradual, may be fatal if it occurs suddenly.

Based on the fact this has (fortunately) never specifically happened to an astronaut, it is difficult to say. Tip: read up on the Soyuz 11 disaster which is the only confirmed death of humans whilst still in space. They were still inside their craft, and all died of cardiac arrest.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.