 Quote by Flustered
This may be a dumb question but how do cosmologist know the BB was smaller than an atom? What if it was the exact size as a proton. Does something in the acceleration say that it was smaller than an atom? If so what about the acceleration proves this?
Did the BB just pop into existence, or was the singularity existing there for some time, than decide to blow. Or did it expand the moment it popped into existence?
|
The size of the early universe is calculated by taking the current rate of expansion, assuming it has been the same, and working out what happens as you go backward. From this you end up with a very dense universe some 13.7 billion years ago.
Questions about the existance of the universe are as yet unanswerable. It might have been a cosmic egg laid by a cosmic chicken for all anyone can prove.