Is the Universe Flat or Does it Have a Height?

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Discussion Overview

The discussion revolves around the nature of the universe's geometry, specifically questioning whether it is flat and what that implies for its height. Participants explore concepts related to the universe's physical shape and geometric properties, as well as the implications of these properties on the idea of height and regions within the universe.

Discussion Character

  • Exploratory, Conceptual clarification, Debate/contested

Main Points Raised

  • Some participants question the concept of the universe being "flat," seeking clarification on whether this implies uniform geometric properties across regions.
  • There is a suggestion that despite the universe being considered flat, there may still be a tallest and lowest point relative to Earth, raising questions about how height could be measured.
  • One participant references a review of mainstream cosmology to address the issue of flatness, indicating that the term "flat" relates to geometric properties rather than a physical shape.
  • Another participant emphasizes that "flat" does not imply a disk-like shape, but rather refers to Euclidean geometric properties.

Areas of Agreement / Disagreement

Participants express uncertainty and seek clarification on the implications of the universe's flatness, indicating that multiple competing views remain regarding the interpretation of height and geometric properties.

Contextual Notes

Participants have not resolved the assumptions regarding the definitions of "flat" and "height," nor have they established a consensus on how these concepts apply to the universe.

jhe1984
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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
 
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jhe1984 said:
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

"Flat" refers to its geometric properties not its physical shape.
 
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?
 
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.
 
Cool. Thanks yall
 

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