Black Holes and the Big Bounce
Big Bounce is a theory uniting two other theories, Big Bang and the Big Crunch.
The theory is that after the Big Bang, there will be a Big Crunch,
then after the Big Crunch, there will be another Big Bang and so on...
A Black Hole is what's left from a Supernova, an infinately small object with a giant mass of a supergiant that was massive enough to be a Supernova.
If a Black Hole is just a vast amount of mass all crushed together into an infinately tiny space,
then wouldn't the Big Crunch create a super, super, super....super, super massive Black Hole and also isn't the Big Bang a reverse of the Big Crunch, therefore "unwinding" the tiny volume of the supermassive Black Hole?
CAN THIS LEAD TO A NEW THEORY FOR THE CREATION AND DEATH OF THE UNIVERSE???? (sorry....got excited....don't answer this....just answer what I wrote above....)
The theory is that after the Big Bang, there will be a Big Crunch,
then after the Big Crunch, there will be another Big Bang and so on...
A Black Hole is what's left from a Supernova, an infinately small object with a giant mass of a supergiant that was massive enough to be a Supernova.
If a Black Hole is just a vast amount of mass all crushed together into an infinately tiny space,
then wouldn't the Big Crunch create a super, super, super....super, super massive Black Hole and also isn't the Big Bang a reverse of the Big Crunch, therefore "unwinding" the tiny volume of the supermassive Black Hole?
CAN THIS LEAD TO A NEW THEORY FOR THE CREATION AND DEATH OF THE UNIVERSE???? (sorry....got excited....don't answer this....just answer what I wrote above....)
Labels: SharedPuzzle
posted by James Yu at
3:45 PM
7 Comments:
Possible, but obviously not verified yet.
The big "crunch" theory has lost any traction, because the size of the universe has been discovered to be accelerating. Before the crunch the size of the universe would have to be decelerating then become a maximum, the begin to shrink. At the present there seems to be no evidence that size of the universe could ever begin to slow down.
I think a black hole is more like a leak in our time/space fabric and that matter is being leaked into another dimension. And with matter leaking, and with the size increasing, there would never be enough matter density to cause a big crunch.
I'm not sure what your question is.
A black hole is a phenomenom inside the universe.
A big crunch would involve the entire universe; space-time itself would shrink to a "point".
The two situations are not comparable.
We're most likely to have the dark future of nothing, not really pertaining to a black hole. It's been seen that slowly all mass system's have been growing farther and farther apart. Imagen a world (one we will most probably never see) where at night there's not a star in the sky. I think black holes are powerful, and terrifying things, but it find a super black hole improbable based on the evidence of all the mass slowly drifting appart.
Super-massive black holes are currently believed to exist at the centre of every galaxy. I assume that they are intimately involved with the galactic formation.
It is thought that our one is about to become active again. But when an astronomer says this, he/she might mean in 50 million years.
When a super-massive black hole is really doing its thing, it radiates very powerful gamma ray beams that could easily wipe out all life in nearby galaxies if they are in the path (of the beam). Because of this, it is just conceivable that we are alone (ho hum). I think there was an "Horizon" science proggy which called them "killer stars" for that reason.
Ragknot is right in that the universe appears to be expanding. i.e. Hubble's constant get bigger at very high distances. Funnily enough, this was found by monitoring the distance and speed of supernovas - which lead to black hole creation.
I think the only reason the the big bounce theory was kinda nice was in that it could have resolved the problem of where did the univers come from, by saying that it always has existed (i.e. by dodging the question). The regular bing-bang theory has got to deal with the spontaneous creation from absolutely nothing problem.
I'm not sure that most people have truly grasped the significance of the big bang. We are talking not just the creation of matter (stars etc.) but of the very space-time fabric in which that matter exists.
Where did the universe come from? I'd like to see someone answer that for the next challenge :)
I just found out that the hypothesized black hole at the centre of out galaxy is 7.8 million km radius. That beastie has eaten the equivalent of 4.1 millions of our sun. Get me outta here.
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