All Questions
18
questions
3
votes
0
answers
61
views
Hypothetically, could the interior of a black hole look exactly like the universe that surrounds us?
I do understand that we can't experimentally verify anything we imagine about the interior of a black hole.
If we were to apply what we know about the physics of the observable universe and assume ...
- 33
2
votes
3
answers
383
views
Is there any remote possibility that a singularity may be real? [closed]
Usually, when physicists talk about singularities in Einstein's theory of relativity, they say that these cannot exist and that they are only mathematical artifacts that indicate that is likey that ...
- 2,462
8
votes
1
answer
632
views
We say the big bang (initial singularity) didn't happen at a point, but is it the same with the singularity of a black hole?
I have read this question:
The simple answer is that no, the Big Bang did not happen at a point. Instead, it happened everywhere in the universe at the same time. Consequences of this include
The ...
- 29k
-2
votes
1
answer
125
views
Is it possible that a black hole has a universe in itself? [duplicate]
Every black hole has a singularity. But the singularity is covered by a thing called 'Event horizon'or ' Schwarzchild Radius'. Our universe is originated from a naked singularity. By naked singularity,...
3
votes
3
answers
272
views
Black hole cosmology vs. Big Bang cosmology
The evidence for Big Bang cosmology is an expanding universe. The expansion of the universe is accelerating. Gravity causes acceleration. What evidence is there that proves everything is moving away ...
0
votes
0
answers
54
views
Was the singularity at the big bang a black hole? [duplicate]
Was the singularity at the big bang a black hole? If not, how does the singularity compare to a black hole?
1
vote
1
answer
476
views
Roger Penrose's conformal cyclic cosmology (CCC)
Does the Weyl curvature tensor $C$ of the black hole singularity in the conformal cyclic cosmology diverge to infinity unlike the Big Bang (C = 0)?
- 61
1
vote
0
answers
157
views
Would a cellular-automata universe allow singularities to exist?
It is usually assumed (almost always) that cosmological singularities (like black hole singularities) are impossible and do not exist in the universe.
If the universe was like a cellular automata (...
- 405
1
vote
4
answers
3k
views
Where does the matter and energy go in a black hole?
Is it possible that when matter and energy enter the singularity inside a black hole, that it all re-appears at the big bang?
Some say that black holes will eventually swallow all the matter in the ...
- 11
0
votes
1
answer
323
views
Big Bang not really the beginning of a completely new universe? [closed]
From what I know about the origins of the universe and the big bang, it is stated that it all started from an intensely hot and dense mass. This sounds like a singularity to me, which means a black ...
- 168
0
votes
2
answers
517
views
How could the "Big Bang" singularity have actually expanded? [duplicate]
We have mountains of evidence about singularities and how they work, and we have mountains of evidence that the "Big Bang" was the origin of the universe as we know it. But if compressing enough ...
- 531
2
votes
0
answers
103
views
What will happen to a naked singularity during the Big Rip? [duplicate]
I apologize in advance if some concepts I use are vague, but I am just an enthusiast.
I have read that the Big Rip will not rip off black holes because the event horizon will become equal to something ...
user64306
5
votes
1
answer
2k
views
Reconciling "The Big Crunch" with the 2nd Law of Thermodynamics
Assume "The Big Crunch" scenario (the universe will collapse to a singularity). In this case, I think of the entire universe as an isolated system; in the "Big Crunch" scenario, it seems to me gravity ...
0
votes
1
answer
149
views
Temperatures at extreme densities
Cosmology (and astrophysics) talk about the "initial singularity" (IS, became the big bang) and "black hole singularities" (BS, inside black holes), and these appear to be quite different: The IS is ...
2
votes
1
answer
337
views
Why are black hole singularities stable?
The Friedmann equations says that huge matter densities lead to huge expansion rates. In Newtonian gravity, two massive point particles separated by an infinitesimal distance will experience an ...
- 2,558