Comment What is the basis for the infinite universe? (Score 1) 202
Sure, there's probably more Universe just like ours that's unobservable,
This has come up before, and I ended up in an extended conversation with someone who was absolutely insistent that the universe was infinite. But he wasn't able to actually explain this. I don't see the basis for this assumption and I can't understand why it seems to be so widespread, is this some new(ish) theory that I haven't heard of? It's my understanding that the universe, as we currently know it (in other words the area effected by the big bang), extends only a few hundred thousand light years beyond the point of last scattering. Further, since the observable universe is slightly larger than last scattering, whatever may be beyond what we can see is unlikely to be familiar.