Quote:
Originally posted by Starkler
I havent given this topic much thought but why cannot space be infinite and just matter from the original big bang expanding into empty space like an inflating baloon ?
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The baloon analogy does not work like that. Ignore the fact that we appear to live in three spatial dimensions and pretend we live in just one! Then on the surface of the baloon imagine that two independent coordinates (say latitude and longitude) represent the space and time coordinates in our one dimensional universe. The expansion of the baloon represents an expansion of spacetime (and everything in it, which by the way defines it, ... General Relativity!
). In the beginning the baloon is a point, a signularity; time, space, everything are one. Then the Big Bang and the following inflation of the singularity into the "baloon" brings the myriad of seemingly distinct things you see before you and some others that you don't.