How tall is the universe?

jhe1984

As the question hints at, how tall is the universe?

I know it is thought to be flat, but what is its height?

Furthermore, are there regions that are taller than others?

Thanks

mijoon

"Flat" refers to its geometric properties not its physical shape.

jhe1984

Hmm - not sure I follow. By geometrically "flat" do you mean that any two regions have the same geometric properties, everything else being equal?

Back to the question, isn't there a tallest and lowest point (relative to Earth, I guess) and wouldn't you be able to measure height along these lines?

SpaceTiger

It might be good to look over my Review of Mainstream Cosmology. In particular, I address the issue of flatness in this post:

Flatness

mijoon

I could not explain it better than Space Tiger did. "Flat" does not mean that the universe is shaped like a large disk. "Flat" means that the geometric properties (such as the sum of the angles equaling 180) are Euclidian.

jhe1984

Cool. Thanks yall