All Questions
17
questions
-1
votes
1
answer
128
views
Big Bang Escape Velocity
When our entire section of the universe was in a single hot dark dense state, right before our big bang, what was the escape velocity?
user394592
0
votes
1
answer
117
views
How was the Big Bang possible if it was so dense even light cannot escape? [duplicate]
Since the big bang comprises of all the particles in the universe in an extremely dense point, couldn't it to be said it would be the most massive black hole to ever exist? Since even light cannot ...
- 11
1
vote
0
answers
95
views
Black Holes, Gravity, and the Creation [duplicate]
As I suppose we all accept, the universe started as an unintuitive singularity—either, "Let there be light," or "The Big Bang". Something from nothing expanded and at luminal ...
- 111
0
votes
1
answer
67
views
What is the combined explosive force of the Black Hole Era?
It is theorised that in the distant future all matter will gravitationally attracted into Black Holes. The universe will then be seemingly still for a long time until the Black Holes have all ...
- 740
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 ...
1
vote
1
answer
919
views
Is there a relationship between Black Holes and the Big Bang?
As the question mentions, is there a relationship between the Big Bang and Black Holes? It appears the Big Bang is a ‘tacked on’ theory that doesn’t align with current theories (since we don’t know or ...
- 257
0
votes
0
answers
23
views
How would primordial black hole forms if expansion of space overwhelms gravity? [duplicate]
I read that density is quite high in the early universe and many speculate that primordial black hole can form and would probably have a mass similar to a human ovum(egg cell). Usually black hole only ...
- 13k
1
vote
0
answers
202
views
How was it possible for the big bang to occur?
I think the person who asked this Phys.SE question meant a different thing than any of the people who wrote an answer thought so I'm asking what I'm guessing the author probably really meant. If there ...
- 1,668
8
votes
2
answers
324
views
How likely are Primordial Black Holes to form in the early universe?
In the very early universe, tiny fluctuations created slight over- and under-densities in mass/energy. As far as I understand, if a region becomes sufficiently over-dense, a primordial black hole (PBH)...
- 81
1
vote
1
answer
114
views
If the observable universe after inflation was all there was, would this form a black hole?
There have been other similar questions, but none of the answers address this point.
Inflation ends after the first 10^-32 seconds. Our observable
universe was the size of a grain of sand that ...
- 341
4
votes
1
answer
3k
views
If the Big Bang theory is true, what caused it to explode?
According to the Big Bang theory, all the matter in the universe was amassed together at one single point. If this was the case, why was it able to explode? The density of the mass would create a ...
- 83
4
votes
1
answer
345
views
Isn't the Big Bang contradictory with the existance of singularities in black holes? [duplicate]
So it's my understanding that the current models predict that a super massive object will collapse beyond the event horizon into a singularity of infinite density.
My question is the following: isn't ...
-3
votes
2
answers
900
views
Big Crunch, then new Big Bang = exact same Universe? [closed]
If after a Big Crunch, the new singularity explodes in a Big Bang, would we get the same Universe all over again? Since black holes retain all the information they've stored, would we get an exact ...
- 71
1
vote
3
answers
327
views
Is there any situation in which a primordial black hole-sized black hole form AFTER the "Big Bang?"
I have seen that primordial black holes may have formed at the start of the universe due to the density of matter. So, is there any way in which our current Universe could spawn a non-stellar mass ...
- 1,666
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