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Every Black Hole Contains Another Universe?

news.nationalgeographic.com

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Re: Every Black Hole Contains Another Universe?

#31

Post by yacin »

gjm11 wrote: post #27

The idea that black hole formation might also be universe formation is quite old; I don't know what the new contribution of Poplowski's work is. (For the avoidance of doubt, I simply mean "I don't know" and not , e.g., "I suspect there is none".) Lee Smolin made an ingenious observation: if that's so, and if it happens that in the "daughter" universe the constants of nature are slightly (and variably) different from…

They mention in the article that Poplowski's contribution is providing a new mathematical model for this old idea.

Re: Every Black Hole Contains Another Universe?

#34

Post by aufreak3 »

btilly wrote: post #9

It is worth noting that the estimated mass of the universe is the same as the mass of a black hole whose event horizon has the radius of the visible universe. This coincidence is rather striking and has been the subject of much speculation, though nobody has been able to make anything useful come out of it. If this theory manages to predict this relation within the created universe, that would be evidence for the the…

This is interesting news, but not very surprising strangely enough.

If you assume that the next approximation to Newton's gravity equations are similar to Maxwell's equations (thereby introducing a secondary field analogous to B, the magnetic field) then you can do back of the envelope calculations that get you interesting results including this one - i.e. our universe's radius is of the order of Schwarzchild's radius of a black hole of the mass we estimate, together with the acceleration equivalences under that condition. By that I mean - the two situations of you accelerating w.r.t the rest of the universe and the rest of the universe accelerating w.r.t. to you are physically indistinguishable. You can get that for rotation (in which case the B analog gives you Coriolis force) and for linear acceleration as well. I think in these limiting calculations you get some constant factors wrong (like the Newtonian escape velocity calculation) but the order turns out ok.

This "analog of B" is called the "gravitomagnetic field" (http://en.wikipedia.org/wiki/Gravitomagnetism) and NASA's GP-A and GP-B probes (http://en.wikipedia.org/wiki/Gravity_Probe_B) are for measuring this effect near earth.

Re: Every Black Hole Contains Another Universe?

#36

Post by binarymax »

"If future experiments reveal that our universe appears to rotate in a preferred direction, it would be indirect evidence supporting his wormhole theory, Poplawski said."

I was wondering, If the universe is our only point of reference, and everything in it is (at a whole) rotating at the same speed and in the same direction, how we could tell?

Re: Every Black Hole Contains Another Universe?

#37

Post by 83457 »

binarymax wrote: post #36

"If future experiments reveal that our universe appears to rotate in a preferred direction, it would be indirect evidence supporting his wormhole theory, Poplawski said." I was wondering, If the universe is our only point of reference, and everything in it is (at a whole) rotating at the same speed and in the same direction, how we could tell?

speed of light?

Re: Every Black Hole Contains Another Universe?

#38

Post by dazmax »

btilly wrote: post #9

It is worth noting that the estimated mass of the universe is the same as the mass of a black hole whose event horizon has the radius of the visible universe. This coincidence is rather striking and has been the subject of much speculation, though nobody has been able to make anything useful come out of it. If this theory manages to predict this relation within the created universe, that would be evidence for the the…

Wouldn't that mean the expansion of the universe is being caused by addition of mass? Would we be able to tell if our universe was getting 'heavier'?

Re: Every Black Hole Contains Another Universe?

#40

Post by randallsquared »

joss82 wrote: post #17
malbs wrote: post #7

Earlier quoted context omitted.

The idea of the big bang being caused by some sort of 'white hole', is kind of cool. Here you have an object absorbing all matter, becoming infinitely dense, and at some point, it becomes so dense with matter that it actually tears a hole right through the fabric of the universe, where it then diffuses into a new reality where matter is low/non-existant. You'd have to agree that if this is possible, the 'explosion' t…

Such a phenomenom would break the law of conservation of mass and energy so bad it will go back to its mother and cry all night.

One way or another, the beginning of the universe has to violate conservation laws, doesn't it?
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