/sci/ - Science & Math

>>12467000
>I guess i'm trying to understand why a universe infinite in time and finite in space makes more sense than a universe infinite in both space and time. Intuition tells me that's the correct model of our universe

It depends on what you mean by universe. I'm not a physicist, but a mathfag. However, you are talking about what physicist today call a 'multiverse', then I suspect that something like that exists, and it is probably infinite in both time and space. There are other more technical questions you can ask like is it topologically connected (which in this context would mean something like spatially and causally connected), and I think it would be much harder to speak definitively about that.

Now if you are talking about our universe, as in the observable universe that appears to have originated with the big bang, in that case I would say it is both temporally and spatially finite. The reason for saying that is simply based on radiation levels throughout the universe and the observation of the expansion of space.

All of this is way beyond the scope of modern science, so unfortunately nobody can provide you definitive answers, but like I said our observable universe does appear to be temporally and possibly spatially finite. However, I suspect that there are things that exist spatially outside of our universe, and to speak metaphorically, I also think there are things that existed "before" or "prior to" our universe (although it would be more accurate to say they existed outside of our timeline altogether, rather than being 'before' or 'after').

>>12389890
It's funny that all of a sudden once Obama became president, all the right wingers suddenly became pacifists and started criticizing the Iraq war. It's almost like the only reason you are against the war is because Obama was able to do what Bush never did and actually take out Al Qaeda and Osama Bin Laden.