Linked Questions

0
votes
2answers
415 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 ...
4
votes
1answer
233 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 ...
4
votes
0answers
109 views

Why didn't a black hole form right after the Big Bang? [duplicate]

Why didn't a black hole form right after the Big Bang and the universe contract towards a singularity?
2
votes
0answers
53 views

What prevented the early universe to become a black hole before inflation? [duplicate]

I am an ignoramus on this subject, and I assume that these statements quoted from wikipedia are more or less accurate:(http://en.wikipedia.org/wiki/Inflaton) 1) Prior to the expansion period, the ...
22
votes
7answers
3k views

Given that matter cannot escape a black hole, how did the big bang produce the universe we see today?

Extrapolation of the expansion of the Universe backwards in time using general relativity yields an infinite density and temperature at a finite time in the past. If the matter contained within our ...
5
votes
3answers
437 views

Has the universe we live in started as a black hole that is imploding?

As discussed in this question, as far back as the 1960s it was suggested that the Schwarzschild metric can be smoothly joined to a de Sitter metric. For example the idea has been used by Lee Smolin in ...
6
votes
3answers
474 views

Why did the matter in the early universe not stick together due to gravity?

(Feel free to correct any mistaken assumptions I have) The overall question I have is: given that the early universe started as an incredibly dense ball of matter and energy, why didn't that mass ...
4
votes
2answers
145 views

Hydrogen cloud at the universe's beginning?

What prevented all of the hydrogen at the universe's start from coalescing into one gigantic star?
3
votes
1answer
302 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 ...
0
votes
1answer
260 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 ...
-2
votes
2answers
133 views

Is it possible that in a black hole still is some 'normal' matter?

The singularity is usual the infinite density of pure energy. But if normal matter like protons and electrons falls beyond the event horizon does this háve to turn into this infinite density of pure ...
0
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0answers
40 views

Big crunch scenario, would black holes form?

Imagine a big crunch scenario in which everything (or almost everything as for I have other doubts, eg about entropy...) rolls back. Shouldn't the contracting universe reach a point of density at ...