- #1
thetexan
- 265
- 11
I had a question after watching a Discovery Channel show on the universe.
They talked about how some speculate the infinitude of the universe as opposed to a finite sized universe and I have also heard the same on this forum...and it got me to thinking...
Isn't an infinite universe incompatible with the theory of expansion? How can a singularity expand to an infinite size? And it would have to because if it had not have done so (ie it expanded to some less than infinite size early on and if the universe then further expanded to the infinite) then at some point the expansion would have had to continue to complete the process to expand to infinity. At that point the expansion would have had to be infinitely fast to fill an infinite universe, and that doesn't seem doesn't seem possible since when is the expansion into an infinite universe complete? Whether that The mechanics of expansion of space/time would require a beginning event and an ending event. ie, if it starts it must have either ended or has not ended yet and therefore not infinite.
So mustn't the logic demand that if there were a beginning event such as the big bang, and there was expansion, then there must not be infinitude?
Another way of stating it is this...any process such as expansion that takes time can not result in an infinite result because the infinite result would have required an infinite time.
tex
They talked about how some speculate the infinitude of the universe as opposed to a finite sized universe and I have also heard the same on this forum...and it got me to thinking...
Isn't an infinite universe incompatible with the theory of expansion? How can a singularity expand to an infinite size? And it would have to because if it had not have done so (ie it expanded to some less than infinite size early on and if the universe then further expanded to the infinite) then at some point the expansion would have had to continue to complete the process to expand to infinity. At that point the expansion would have had to be infinitely fast to fill an infinite universe, and that doesn't seem doesn't seem possible since when is the expansion into an infinite universe complete? Whether that The mechanics of expansion of space/time would require a beginning event and an ending event. ie, if it starts it must have either ended or has not ended yet and therefore not infinite.
So mustn't the logic demand that if there were a beginning event such as the big bang, and there was expansion, then there must not be infinitude?
Another way of stating it is this...any process such as expansion that takes time can not result in an infinite result because the infinite result would have required an infinite time.
tex