Geometries of the Universe

  • B
  • Thread starter Allen_Wolf
  • Start date
  • Tags
    Universe
  • #1
48
4
What are the most widely accepted geometries of the universe?
 
Phys.org - latest science and technology news stories on Phys.org
  • #2
Euclidean geometry (that's the one where we learn about area of shapes, sectors, etc.). Then you have the non-Euclidean geometries like elliptical geometry (Riemann geometry), which describes curved space.
 
  • #3
Allen_Wolf said:
What are the most widely accepted geometries of the universe?

I'm not sure what you mean by this. We have one current best-fit model for the spacetime geometry of the universe: it's an expanding universe with spatial slices of constant comoving time that are flat (Euclidean). The error bars in measurements still allow a small chance that the spatial geometry of slices of constant comoving time is a 3-sphere or an open "3-hyperbolic" geometry, either way with an extremely large radius of curvature (i.e., very close to flat). Is that what you're asking about?
 

Suggested for: Geometries of the Universe

Replies
18
Views
523
Replies
22
Views
969
Replies
11
Views
634
Replies
9
Views
1K
Replies
36
Views
3K
Replies
5
Views
1K
Replies
30
Views
2K
Replies
2
Views
115
Replies
2
Views
881
Back
Top