Does flat Universe have a center?

Click For Summary

Discussion Overview

The discussion revolves around the concept of whether a flat universe has a center, exploring implications of geometry in spacetime, the nature of dimensionality, and philosophical perspectives on the universe's structure. The scope includes theoretical considerations and conceptual clarifications.

Discussion Character

  • Debate/contested
  • Conceptual clarification

Main Points Raised

  • Some participants suggest that if the geometry of spacetime is flat and infinite, it raises questions about the existence of a center in the universe.
  • Others argue that while a center may not exist in four-dimensional spacetime, one could conceptualize a center in three-dimensional terms, such as the center of Earth.
  • A participant raises the idea of defining a "center" in terms of mass distribution in the universe, questioning if the spatial center correlates with the center of mass or the Big Bang origin.
  • Another viewpoint references ancient Greek philosophy, proposing that if a universal center exists, it could imply a cosmical origin that is not special or different from an observational frame, regardless of the universe's geometry.

Areas of Agreement / Disagreement

Participants express differing views on the existence and definition of a center in a flat universe, indicating that the discussion remains unresolved with multiple competing perspectives.

Contextual Notes

Participants have not fully defined the assumptions regarding dimensionality or the implications of mass distribution, leaving some concepts open to interpretation.

S.Vasojevic
Messages
173
Reaction score
0
If geometry of spacetime is flat in intergalactic medium (empty space), why then there is no point of asking where is the center of Universe?
 
Space news on Phys.org
As long as it is infinite in all directions, where would the center be?
 
Center is not exist at 4D, But we can say the center at 3D.

In Earth, We live at the 4D. But we can say 3D center of earth.
Also we wish know center of Earth in curiosity. though, it has not means specially

In this view, can say the space center of universe? and where?

add menas in physics, fine the center of mass in universe1(our universe)
and space(geometrical) center is same to mass center? space center is same to bigbang point or region(3d)?
 
Last edited:
The ancient Greek philosophers referred to the “sphere of the universe” whereby a spherical surface necessarily exhibits a centre or origin. If a universal centre can exist, then accordingly there may be a cosmical origin determined by Nature that is not special or any different as an observation frame. The gradient of size to age for open, flat, closed or bounce scenarios is irrelevent.
 

Similar threads

High School Size of universe - rewinding big bang versus "flat" universe
  • · Replies 54 ·
2
Replies
54
Views
6K
Undergrad Relationship Between Expansion and Curvature in the Universe
  • · Replies 3 ·
Replies
3
Views
3K
Undergrad Why is the observed local region of space flat?
  • · Replies 25 ·
Replies
25
Views
4K
Undergrad CMBR & Flatness: Mapping Universe Flatness?
  • · Replies 12 ·
Replies
12
Views
3K
Undergrad How Does Curvature Density Parameter Affect Universe Flatness?
  • · Replies 9 ·
Replies
9
Views
3K
High School Does dark energy or cosmic inflation explain flatness?
  • · Replies 37 ·
2
Replies
37
Views
6K
High School What Does it Mean When We Say the Universe is 'Flat'?
  • · Replies 3 ·
Replies
3
Views
2K
Undergrad What Are the Boundaries of a Flat and Saddle-Shaped Universe?
  • · Replies 24 ·
Replies
24
Views
4K
Undergrad An idea for calculating the probability that the Universe is flat
  • · Replies 20 ·
Replies
20
Views
2K
High School Curvature at the center of a spherical universe
  • · Replies 11 ·
Replies
11
Views
2K