But beyond that, there ought to be much more Universe beyond the limits of what we can presently see: the unobservable Universe. According to the Big Bang and the observations that support it, the Universe had a beginning. Right now, in a 13.8 billion year old Universe, our current visibility limit is 46 billion light-years. Beyond our observable Universe lies the unobservable Universe, which ought to look just like the part we can see. You might notice an interesting occurrence: the future visibility limit is exactly equal to the reachable limit (of 15 billion light-years) added to the current visibility limit (of 46 billion light-years).

Source: Forbes March 05, 2019 07:00 UTC