Quote:
Originally Posted by snas
I've been reading about various possible universes. One question that seems to come up frequently is, is the Universe finite or infinite? As I am not an astrophysicist, I may be missing something here. But, it seems to me that if the BB occurred when a "singularity" containing all of what now makes up the Universe suddenly underwent a period of massive, rapid expansion, then surely the original singularity had an edge,a boundary. If so, it was finite. So how would a growing universe get from a finite singularity on day one of the new Universe, to an infinite state. Surely a finite thing cannot become infinite.
Stuart
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Oh boy .. tough question .. one for a mathematician to answer ..
The way out of the dilemma is to envisage the 'singularity' as having no boundaries and is infinitely small to start with. 'Infinitely small' is the same as 'infinite' … ie: infinite ...
A 'point' in geometry, has zero dimensions and thus has no boundaries because it has no dimensions to establish any boundaries - same thing.
Did that confuse you ?
Cheers
PS: I'm happy to side-step this one .. (I think what I've said is valid, though .. this is how I think of it) . Cheers (I tried, at least).
