Actually astronomers and cosmologists have speculated that beyond the visible universe could be either more of the universe we are used to or vastly different areas with different laws of nature that evolved much differently then our "pocket" universe within a multiverse so to speak. Very few people think that the visible universe is all there is because thats a bit "human" centered. But unfortunately if we can't see or detect anything from these deep regions of space we may never really know what they look like.