Black Hole Singularity of a Universe

In summary, during a lecture by Stephen Hawking, it was mentioned that our universe began as a singularity. There is a possibility that this singularity was caused by energy from a Black hole in another space and time, leading to the creation of an infinite number of universes. Lee Smolin has extensively written about this idea, including in a book. However, many people do not fully trust general relativity in extreme densities and believe a quantum theory of gravity is needed to analyze the singularity. Modern quantum theories such as Horava gravity, loop quantum gravity, and string theory suggest that the universe existed before the big bang, but these ideas have not gained widespread acceptance. There is also another proposal that suggests the same conclusion, but neither
  • #1
tkopunek
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In a recent lecture by Stephen Hawking he mentions that our universe started as a singularity. Can this singularity be caused by energy from a Black hole in another space and time? This in turn would mean that an infinite number of universes can be and are created.
 
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  • #3
That the universe began in a singularity is prediction from general relativity (GR) but most people think we can't trust GR in the extreme densities encountered in this era hence I think few people really believe there is a singularity in our past.. A quantum theory of gravity is needed to analyse what happened here. Modern quantum theories like Horava gravity, loop quantum gravity and string theory imply the universe existed before the big bang. Of course they might all be wrong, we shall have to see.

As MFB pointed out Smolin has suggested what you say and there is also another proposal which has the same conclusion:
http://io9.com/5596712/every-black-hole-may-hold-a-hidden-universe

Its important to note that neither of these ideas have really caught on.
 

1. What is a black hole singularity?

A black hole singularity is a point of infinite density and zero volume at the center of a black hole. It is the point where the gravitational pull becomes infinitely strong and space-time curves infinitely, making it impossible for anything, including light, to escape.

2. How is the singularity of a black hole related to the universe?

The singularity of a black hole is a concept that is used to explain the origin of the universe. According to the Big Bang theory, the universe began as a singularity that expanded rapidly and eventually formed the universe as we know it.

3. Can we observe the singularity of a black hole?

No, we cannot directly observe the singularity of a black hole as it is hidden behind the event horizon. However, we can observe its effects on the surrounding matter and space-time through various techniques such as gravitational lensing and studying the motion of stars near a black hole.

4. What are the implications of a black hole singularity on the laws of physics?

The singularity of a black hole challenges our current understanding of the laws of physics, particularly the theory of general relativity. At the singularity, the laws of physics break down and it becomes a point of infinite density and curvature, making it difficult to reconcile with our current theories.

5. Is there a way to escape a black hole singularity?

According to our current understanding of physics, it is not possible to escape a black hole singularity. The immense gravitational pull at the singularity makes it impossible for anything, including light, to escape. However, there are theories that suggest the possibility of traversable wormholes that could potentially lead to other parts of the universe.

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