Non interacting regions of the universe.

Does the universe contain regions that cannot have any interaction with each other?I'm not thinking about event horizons derived from a black hole but regions of space that are so far apart that they could never shared information from each other?What I mean is is there a specific circumstance where something happening at point a can never (i.e. given as much time as you like) affect somthing a point b.I was wondering about the expansion of the universe and how things seem to be getting father apart (on the very macro scale); would we ever get to a point where every partical in the universe was so far from every other partical that there would be zero interaction and it got me thinking if this could be happenig with regions of the universe.I guess I'm thinking only spatially (as I think time is just another distance like point of reference) but I guess there could be time 'evet horizons', too.BB and cosmology, please.Edited by Larni, : routine editing

Cute.Would it also be correct to say that a from our position we would (most likely) only ever be able to observe one of the two mutally exclusive points?If two point are not seperated spatially but in time would there also be point where they cannot interact?Edited by Larni, : most likely

Is that heat death?ABE: welcome to the club house!Edited by Larni, : welcome

I thought that things got so far away and the lamda thingy got so great that a new universe would spark up spontaneously.

If you would like to start another thread, please do.It's not the point of this one, though.

Well, I've just been informed by that nice Cavediver that there are theoretical models relating to pre big bang cosmology.Does that count as thinking outside the box?I get the feeling that 'thinking outside the box' means believing in god: am I wrong?