bylm1-Bernie wrote:
I would like to hear a semi-cogent explanation on what lies out beyond the farthest star. Where is the end, in other words? And, when we get to the end, what is out past that? And how far does it go?
The quick answer is that we don't know.
But I am willing to guess. I get some of these ideas from a book or two.
If you went out, you would pass stars, then galaxies, then clusters of galaxies, then superclusters of clusters of galaxies.
It mostly looks like lots of empty space, in between the stars and in between the galaxies and clusters and superclusters.
Up to this point in the description, most people will agree. It is conventional knowledge. They will start to disagree as I continue to describe, below.
When you got past the farthest star, if you could know where you were and where everything else was, you would find that you're on the surface of a space bubble that is expanding. It expands fast enough that you would never actually be able to keep up with it; so, for human purposes, it is as though it were infinite. You would be perhaps 10 billion or 100 billion lightyears from home. Everything else, including home, is also on the same surface of the same space bubble. So it's somehow different from the ordinary straight-line geometry we learned in high school 50 years ago.
Outside that space bubble are other space bubbles. Each space bubble is a universe.
It goes on forever.
For now, we don't know how to get from one space bubble to another. In one book, the author thought there was a possibility of somehow getting from one space bubble to another.
You could also ask: what's in between the space bubbles? Or even, what's beyond all the space bubbles? Again, we don't know. But I'm willing to guess. There's nothing in between the space bubbles. There's nothing beyond all the space bubbles. It's just space bubbles in all directions going on forever, and nothing in between them.
But it gets more complicated. The physical laws inside one space bubble may be completely different from the physical laws inside another space bubble. We don't know.
All that's my guess for now.