Dear Leo, no one can give you the answer. That's something no science can prove and when someone claims to have spoken to god or seen the other side everyone thinks they're insane. We've established that spirits are real, but heaven and hell is hard. I believe in Limbo if anything, because the guides have to have some other realm to pass from. And kids can see these spirits because they left that same plane not so long ago, and some people just stay in contact and never lose their psi ablility. I admit to being one of the kids who talked to "ghosts" and saw things. I still do, but they're darker now.
But. Heaven and hell. We can't bring someone back and ask them, and a sayance {however you spell that} won't do any good because, as I said, thats contacting spirits and spirits are removed from the body and mind and put in some other plane.
Me being me, I don't believe in heaven and hell, god and satan, but I do believe in limbo. The plane where the spirits roam and the body and mind... well it just sleeps under ground. While the soul goes and finds another body to inhabit, thus creating reincarnates. I have a fucked up sense, though so maybe my opinion is just major bull.