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Tagged with big-bang-theory size
3
questions
1
vote
0
answers
80
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Expansion of space - how do we end up with an unobservable region?
I've just been answering a question on this issue,in physics SE,and realised that my answer conceals a point I don't myself understand.
I understand that
The expansion of metric isn't affected by ...
- 1,030
19
votes
3
answers
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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 ...
18
votes
5
answers
12k
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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 ...
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