with astral projection you can acctually see heaven and hell..and everything in between..why can you see them? because they are fake, created from such a strong human belief. My uncle astral projects, I have tried but unsuccessfully so far you have to go to sleep but keep your mind clear and awake. Even if you manage to do it successfully you should go back to your body within a minute or you will fall completly asleep and forget that it happend.