Does the universe have an end and if so What is at the end of the universe?

Answer 1

The consideration for whether our universe is truely endless depends on one's determination of what the universe means to them. It could be said that the universe is endless because its very determination is built upon the evolving consideration of a reality within the dimensional degrees of SpaceTime convergence. It might be stated that our perspective of universal reality is bounded by our fourth dimensional frame of reference for existence within this SpaceTime continuum. In this sense of existence, it might be stated that our universe is not infinite; for outside this fourth dimensional abstraction of the SpaceTime continuum, our reality of existence has no meaning.

Yet within the consideration of our traditional fourth dimensional existence, scientists agree that the Theories of Relativity and Special Relativity bound our universal reality with a definable SpaceTime continumm. By virtue of these theories, expectations are extrapolated. One such expectation is that once the universe was once created by the Big Bang, the universe will end in a Big Crunch. Another expectation is that once the universe was once created by the Big Bang, the universe will end in a Big Rip. Therefore, by virtue of these theories, our universe within this fourth dimensional abstraction, will eventually evolve beyond its current dimensional limitations. And, as stated before, outside this fourth dimensional abstraction for our SpaceTime continuum, our reality of existence has no meaning.

An alternative consideration for a universe in which the Big Bangis only the creation ofexistence, philosophically speaking, the dark energy (what you see as nothingness) cannot have an ending, so to say. In this perspective, the universe is abstracted pre-Big Bang.

More simply, matter and energy have limits. Although the universe keeps expanding, there are no more galaxies or intergalactic gravity at some point, in any given moment.

The universe (galaxies, clusters, stars) will have used all its fuel one day, and is going to black out, while dark energy will still be around. You can think ofthis nothingnessas the medium of universal being, or anecdotally as god's mind.