[adelarsq]

At same time that a center does not exists it exists. Take a line between the two sides from the theoretical border, divide in the middle and will be a center. But isn't a center.

[pdonis]

> Take a line between the two sides from the theoretical border

There is no "border" to our universe. The fact that you have trouble visualizing such models does not mean they don't exist.

[tick_tock_tick]

There is an "effective" border because of speed of light limits. Technically we are "at the center" of our intractable universe.

[pdonis]

> Technically we are "at the center" of our intractable universe.

We are at the center of our observable universe, yes, but that fact does not support any of the claims I have been responding to in this thread.

[adelarsq]

But if the matter on the big bang was limited wouldn't a limit on the universe size based on how much matter exists?

[pdonis]

> if the matter on the big bang was limited

It wasn't, according to our best current model. In that model the universe is spatially infinite and always has been, so it contains an infinite quantity of matter.

> wouldn't a limit on the universe size based on how much matter exists

There are mathematical models in which the universe has a finite size and contains a finite amount of matter. (These models are not completely ruled out by our current data, but they are considered very unlikely as compared to the ones in which the universe is spatially infinite.)

However, even in those models, the universe has no boundary: it is spatially a 3-sphere, which has a finite volume and no boundary similar to the way the surface of the Earth, a 2-sphere (at least approximately) has a finite area and no boundary.