   simple black hole question
  I'm in the middle of debugging right now, and had to wonder about this..If a black hole would lead to a different instance of a universe, then on the other side the black hole would be turned inside out, no? So, seen from the other side the black hole would be the origin of that universe, and all the mass of that universe would be sourced from our own universe?   
  Define 'lead to a different instance of the universe'. Depending on how you interpret that question, different answers are possible. Bear in mind that, due to space dilatation, it will probably take you infinitely lont to reach the singularity in a black hole (though reaching the event horizon happens in finite time).   ;  I was thinking that the other universe would begin right beyond the event horizon of our black hole. From there it'd expand and do whatever else a universe is doing.;Quote:Original post by basementI was thinking that the other universe would begin right beyond the event horizon of our black hole. From there it'd expand and do whatever else a universe is doing.The event horizon is a mathematical sphere combined with an optical illusion, it does not have any physical substance (that is, whatever is inside the event horizon is still in our universe). Though you could certainly consider the insides of the event horizon to be a pocket universe with everything plumetting towards a black hole in its center—sounds like Democritus' atoms.   ;Quote:Original post by basementI'm in the middle of debugging right now, and had to wonder about this..If a black hole would lead to a different instance of a universe, then on the other side the black hole would be turned inside out, no? So, seen from the other side the black hole would be the origin of that universe, and all the mass of that universe would be sourced from our own universe?There is a line of thinking vaguely along these lines; a space time graph drawn about the vicinity of a singularity produces a hyperbola. Exactly what it means to travel between the two curves of the hyperbola is completely unknown. Some speculate it will lead somewhere else in the universe, somewhere else in time, or into a different universe altogether. But in any case, we're unlikely to ever find out because you'd have to fly through the singularity faster than the speed of light in order to make it through.So the answer to your question is; if you fly through a black hole, you enter a parallel dimension where everyone wears hats on their feet and is called Steve, and they all live in a giant planet constructed entirely out of sticky tape and bendy straws.   ;  A black hole has huge mass, from all the stuff it sucks in. So why do you think the mass it contains leaves our universe?   ;  There is no direct proof of the existence of black holes yet and I personally feel they wouldn't really exist. In any case, they would be just really-really massive astronomical bodies and if you entered the black hole you would just be desintegrated and stuck to it's "surface". The way the space/time behaves inside of it is pretty irrelevant, they would still interact with our universe and eventually *puf* themselves back into it due to Hawking's radiation.   ;Quote:Original post by d000hgA black hole has huge mass, from all the stuff it sucks in. So why do you think the mass it contains leaves our universe?Actually, it has a huge amount of mass because it already had it when it was a star. The star forms the blackhole with just some of the mass it had before imploding (and becoming a nova).   ;  So, wait, when something massive enters a black hole, its mass isn't added to the mass of the singularity, but is instead teleported away?   ;Quote:Original post by Iron Chef CarnageSo, wait, when something massive enters a black hole, its mass isn't added to the mass of the singularity, but is instead teleported away?Heh.« The ocean contains immense quantities of water because of all the kids who pee in it.— Actually, the ocean contains so much water because of the rivers and the rain.— So you mean when a kid pees in the ocean, the pee is instead teleported away? »   