Does the universe have a Dynamic final shaped or form?

Question

Does the universe have a Dynamic final shaped or form?

Answer 1

No.

Answer 2

It is not sure. We have seen that universe is homogeneous whatever way we see it. If it had some hard boundaries, then there would be something odd there that do not occur in its viscinity. Till the date, scientists believe that universe is like a Mobius paper.

Answer 3

Actually we don't even know enough about the shape of the Universe to affirm that the Universe is infinite or not.

Suppose we put an ant on a infinite sheet of paper. The ant is short-sighted and sees only that close to him his universe look pretty flat. If he starts walking he will never meet a boundary and never come back to the same place again. The two-dimensional plane is infinite and without bounds.

Next put the ant on a large sphere. Again our ant can not see far enough to observe any curvature. If he starts walking in one direction he will never come to a boundary, but this time he can make a roundtrip. The spherical universe is unbounded but finite.

We are in the same position as the ant, but in three dimensions. Locally our Universe seems flat and unbounded, but we don't know if we are in the 3 dimensional equivalent of the plane or the sphere. In the first case the Universe would be infinite, in the second place it would be finite.

Now the fun and speculation starts....

Even weirder shapes are possible. In two dimensions our ant has a third possibility, a universe shaped as a torus or a donut. We can make a torus by taking a sheet of paper, roll it up in a cylinder and then glue the two open ends together.

The torus also has a three dimensional equivalent. Take a cube and imagine the following rule: everytime we leave the cube-universe through a side, we immediately enter it again to the side opposite. It is as if the opposing sides are glued together.

Strange? Yes, but not excluded...

My current favourite shape for the Universe is the following. Think of *two* three dimensional spheres. We live inside one of the spheres. A spaceship that flies to the boundary of one sphere immediately reappears on the corresponding point on the boundary of the other sphere and continues its voyage there. It is as if the boundaries of the two spheres are somehow glued together.

Neat, isn't it?