alternate big bang theories

[altezon]

yes but you're splitting infinities aren't you

I tend to rarely split infinities -- almost never.

I know, but the cyclic theory depends on a crunch. If the universe keeps expanding forever, obviously the cyclic theory is out. The last I heard, new data indicated an accelerating expansion that ruled out recollapse. No collapse, no cycle. But perhaps it's not as certain as I thought.

why would the cyclic theory be out. if the universe stretched in to patches that couldn't be connected. and the resulting universe did the the same it would be cyclic chaos. each patch snapping back and creating a big bang.

er, there's that of course

you can add or subtract from an infinite number and it will always be an infinite number

nope, because there is no infinite number. arithmetic operations are only defined for numbers.

In physical cosmology, the Big Crunch is one possible scenario for the ultimate fate of the universe, in which the metric expansion of space eventually reverses and the universe recollapses, ultimately ending as a black hole singularity.

Right -- not another universe but a singularity.

now some are saying a black hole that doesn't create a singularity has a universe in its stead

I hadn't heard those rumors, but the "Big Crunch" nic is already taken.