Space is totally different thing from our Earth. everything is so difficult and totally different in space. Unlike Earth, If a man dies in space or if there is any dead human body in space, then it will under go decomposition. It is observed by many scientific institutions that whoever has died in space, their body would go under decomposition. This decomposition usually takes 12- 16 hours, but if the dead body is close to a star, it will catch fire and burn.