All Questions
Tagged with big-bang-theory universe
10
questions
51
votes
7
answers
12k
views
What is in the center of the universe?
If the universe has formed & originated by a Big Bang Explosion, then there must be empty space left in the center of the explosion site, as all the matter is travelling at tremendous speeds away ...
18
votes
5
answers
12k
views
How can the universe be infinite?
I've heard from renowned astrophysicists that we don't yet know whether or not the Universe is infinite. How is that possible regarding the big bang theory is accepted (as they all do)? Are they ...
- 1,037
19
votes
3
answers
4k
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How can the 13.8 billion years old universe have a radius of 46 billion light years? [duplicate]
The universe is about 13.8 billion years old. Assume at the big-bang it starts from a small region and the maximum possible speed according Einstein is the speed of light how can the universe got a ...
4
votes
3
answers
1k
views
How can the universe be expanding faster than speed of light? [duplicate]
So the story goes like this:
A long time ago, 13.799±0.021 billion years to be exact, something happened. It was a big bang, loud explosion and universe came to existence. It grew and grew, and now ...
- 701
3
votes
1
answer
903
views
What was "space" like before big bang?
I have a simple question which I think about often but have no answer.
If The Big Bang is true, than if the whole space was just a point 14 billion years ago, then what was around that point, some ...
6
votes
2
answers
630
views
Outside of a Universe and its origin
Per the Big Bang Theory, the universe was formed from a dense singular point which existed 13 billion years ago and has been expanding ever since. This suggests that the point should have existed ...
- 171
5
votes
2
answers
293
views
Is mass+energy conserved when a new universe forms inside a black hole?
My understanding is that there are credible theories out there in which the formation of a singularity in a black hole also represents the beginning of a new universe via a big bang. We can't see the ...
- 369
4
votes
2
answers
1k
views
Why are distant galaxies not visible in the observable Universe?
Assuming that the Universe is and has been expanding ever since its creation (Big Bang theory), the galaxies that are now at the 'edge' (not visible theoretically) must have been (at some point in ...
- 155
4
votes
2
answers
361
views
Was the Big Bang an event within a preexisting Universe, or did it mark the beginning of the entire Universe, beyond just the observable Universe?
Could it be that the Universe is truly infinite, and the Big Bang was merely a singular, specific event that resulted in the birth of a 'bubble,' i.e. what we perceive as 'the observable universe'? ...
- 51
1
vote
2
answers
855
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Calculating the age of the universe
Is the calculated age of the universe that of the visible universe or the entire universe? I dont know how the age is calculated but if it is believed that all we see visibly IS the entire universe ...
- 113