O.K, so the universe stared life as a primeval atom, or a similar object??Well what was that object in?Answer: well... it could be dark matter (or a substance unknown to us...which dark matter is)What if dark matter acted as normal matter, the large 'vacuum' which was 'outside the universe' is actually eternal dark matter and the grouping of this into a central point due to a gravity type force, if not gravity itself, could lead to collisions of dark matter.This in turn could transform energy and may create 'matter' as we know it today. The transformation of dark matter to normal matter could be what we would perceive as an expansion of matter, which could link in with theories of inflation and thus the continued transformation of dark to normal matter could explain why the universe is expanding.Therefore the expanding universe could be a result of a far greater infinite (perhaps) expanse of dark matter.Only a theory, not very well explained or backed up in anyway, but thought I could lay it out on the table for you all to prod and jab at the concepts that could make it work.