That's true Phobos, because we can't see what's on the other side of a black hole then how the blinking heck do we know what's there. I think it's a very interesting theory though. I first heard about white holes on the comedy " Red Dwarf" where Kryten say's " I've never seen one before no one has, but I'm guessing it's a white hole. Every action has an equal and opposite reaction, a black hole sucks time and matter out of the universe, a white hole returns it." hmmmm!
whiteholes, yea who called me?
I think can't exist now since it defies the 2nd law of thermodynamics. So if it does, the law have to be changed. Quasars are not whiteholes?!?!?! try comparing the big bang to a whitehole!