Dark matter will prevent the universe from existing infinitely, it will die a heat death. The remnants could potentially exist forever if there is no God.
Oh, you were talking about finite duration. Yes, the universe that began with the Big Bang is finite in duration.
I was talking about size. The universe could be infinite in size.
Yes, but it does have a beginning. There was a point in time, t = 0 when it did not exist.
We do not know that. We know that our universe came from a single spot, but we don't know how small that spot was. Possibly it reached zero cubic inches of infinite density (a singularity). If so, then time was equal to zero, and everything beyond the Big Bang is undefined.
But we don't know if it went all the way back to zero. It could have begun at some finite size, such as the size of Plank's length, or the size of a basketball. In that case, I understand our space time could have extended long before the Big Bang.
And no "beyond the Big Bang is undefined" does not mean whatever Ed1wolf says before that is the way it was.
And it definitely did not exist infinitely into the past for the reason I stated above and also we would have never reached the present.
Again, you just assume it reached a singularity. You have not proven it.
And you assume that "undefined" means "Ed1wolf is right when he says it did not exist infinitely"
"Undefined" does not mean "whatever Ed1wolf says is right".
I am not claiming that we can see everything in the universe, it is much too large. But just because we cannot see everything in the universe does not mean that it is infinite in length of existence or size.
In other words, you agree with what I said in my post.
there is no real evidence that there were other big bangs.
What we do know is that there seems to be an expansion of our universe at the very early stage, which we call inflation. And that there is something expanding our universe even now. (We call it dark energy). And we do know that quantum effects seem to be universal, even in what we call nothing. Put that all together and it seems to indicate that there is something out there expanding our universe and that quantum effects seem to be everywhere. So we do have evidence of something natural out there with creative powers.
And please don't argue that you know for certain that there was a singularity, and that therefore Ed1Wolf gets to define what was before that, and that therefore Ed1wolf gets to declare that there was no spacetime, and that therefore Ed1wolf gets to declare that quantum effects couldn't take place.