What does the edge of the Universe look like?

Question

Is it a wall? A boundary to another dimension? Is it the edge of many other universes? If so, where do they end?

Answer 1

According to most physicists, the universe doesn't have an edge, so it doesn't look like anything! The universe is finite, and it is expanding, but it is not expanding into anything; space itself is expanding with it, apparently at an accelerating rate (the acceleration was a fairly recent discovery). The usual way that a finite but unbounded reality is described is by analogy with a two dimentional space: consider the surface of a sphere, it has a finite size but there is no boundary anywhere on it. It's difficult to imagine the finite/unbounded scenario for our universe, however, because it has at least four dimensions and quite possibly many more than that (if string theory is correct). On some views, our own 'universe' is like an expanding bubble in a vast landscape of universes, hence your question about the 'edge' of many other universes. But there can even be an almost infinite number of universes within our own universe, if only they are expanding more slowly than ours. Where do they end? I don't think anyone knows for sure. Experiments with bigger particle accelerators than we have now will help, but may not answer all the questions.

Answer 2

Its a wall with a sign on it saying no peeking.

really though, it depends which of the guess theories of the universe you consider.
options are:
There is so much matter that space bends back on itself, this one has no edge, if you went far enough in 1 direction you end up back where you start from.

There is not enough matter for space to bend back on itself, in this type the further you go the less there is there, matter thins out and there is nothing to see, behind you are all the stars, infront blackness, not even any light comming back your way.

The universe is a space time bubble in an infinite sea of ether, this one has a wall, but th nature of the wall is disappointing, its more like a thickening jelly that become harder to get through. You wont see or experience this thickening since its a space/ time effect, to you all appears normal, but to someone observing you, you slow down.

Answer 3

The edge of the universe looks like the portion that you can see. It is physically impossible to create a closed system smaller than the Universe. For this reason, any isolated system coupled with its surroundings constitute the Universe. Also the universe is all that exists, taken as a total.

Answer 4

It is an old curtain which you can see small specks of light through it. On the other side of the curtain is an old man, sitting on a stool, hunched over a candle light, writing the story about this universe.

Or on the other side is a young boy (ok, I am sexist) doing his homework.

Or on the other side is yourself, lying on your deathbed, surrounded by your loved ones both still here or already gone.

Or you see a large room with heavy old wooden furniture. There is light coming down from windows high above you. It appears to be a library of some sort. You spot a familiar object. On a shelf there is large shell. You pick it up. Look inside. It is dark, shimmering with tiny dusts of carbon. It is very light. Wait, they are stars.

Answer 5

In theory, since it's infinite, there is no end. It's hard to wrap your mind around it. I would like to think it was a wall that said: This is the end of the Universe, please turn around and go back.

Answer 6

There is no edge, the universe goes on forever.

Answer 7

space has no end or no begining. So there is no boundary. Galaxies have beginings and ends. What it looks like at the begining is what it is like at the end.

Answer 8

nothing. Until something comes into contact with the space it doesn't exist. I can't explain it very well ,but it was in one of stephen hawkings books

Answer 9

shut your eyes do you see anything? Thats your answear.

Answer 10

pizza crust