If the universe had an edge and you went to it what would you see, and could you cross this edge?

Answer 1

The universe does not have an edge in the usual sense. Suppose you were a two-dimensional being living on the surface of a sphere. You could move over the surface of the sphere all you wished and you would never find an edge. You would discover, however, that the geometry of the universe was not Euclidean, that is to say, the universe is not "flat". You would discover that the universe was closed and bounded.

So with our three-dimensional universe. We know that it is not Euclidean; it is bounded, it would appear at the moment that it is not closed, but open. That is still controversial.

HTH

Charles

Answer 2

Wow, you aren't going to get a definite answer here, but I'll give you what I think. You go to the edge and look back, it would appear as space always appears, nothing too out of the ordinary. Now, if you were to attempt to cross several things could happen. One, you cross the edge of the universe and end up on the opposite side. Two, you approach the edge, but you can't cross it, the universe continues to expand as you approach it. Three, you cross the end of the universe, which triggers a massive reaction that ends everything.

Answer 3

Columbus was faced with a parallel dilemma. Maybe he was suicidal and wanted to fall off the edge and look what happened instead. Columbus was in a 3 dimensional world. The universe is at minimum 5 dimensional. Time and space must be taken into consideration. The gravitational pull of the core of the universe must also be taken into consideration. So first, while you cling to the edge of the universe sailing at a high speed toward a vast black void, through a deafening sound barrier, your watch would spin exceedingly fast and screech from the friction of its own sound until it simply exploded into light particles. The immense pressure of gravity in the core coupled with the outward thrust of the spinning universe would shred your clothing and leave you embarrassingly naked for the whole universe to see. You would be unable to breath but living would be the least of your problems. You might try to cross the edge but the outward expansion of the universe would stay a silly millimeter ahead of you. If you somehow got ahead of the expansion you would be in a great cataclysmic void in space that had devoured time. There would be no past, present or future, only infinity.

Answer 4

OK, the universe is at least 4 dimensional and similar to a hypersphere. It is not truly infinite as most people suppose, yet it goes on forever and while unbounded, is constrained.

And this is only the start of the weirdness.

If you want a full and comprehensive explanation to this question, read Chapter one of Paul Davies book God and The New Physics where what I said is well explained - along with lots more.

Answer 5

I would bring a bungee chord and jump

Answer 6

You would see nothingness, a giant void. If you crossed into it, you would disintegrate into nothingess, too.