Please help me reconcile what I see as contradicting theories:
- The universe began with the Big Bang and expanded from an infinitesimally small point.
- The universe is infinite.
How can something infinitely big "expand" from an infinitely small point? There has to be some sort of a 'blast wave', right?
Also, if we think we know the total amount of matter the Big Bang must have produced - how can a limited amount of matter fill an infinitely big universe?
P.S. One idea I have is that the universe may be infinite, but the Big Bang didn't create it - it created matter within the infinitely big universe. This would explain the expansion we're observing now: the matter will continue being distributed across the infinitely large universe. So I guess my question is more of a "why this assumption is incorrect"... :)