B COM of Universe: Does it Mean Anything?

  • B
  • Thread starter Thread starter jha192001
  • Start date Start date
  • Tags Tags
    Cosmos
AI Thread Summary
The term "center of mass of the universe" is deemed meaningless because the universe lacks a defined center. For a center of mass to exist, there must be a central point, which contradicts the universe's spatially homogeneous and isotropic nature. Discussions highlight that standard cosmology does not support the concept of a center due to this homogeneity. Questions arise about the meaning of "center" and "geometrical center," but these do not alter the fundamental cosmological principles. Ultimately, the consensus is that the universe does not possess a center of mass.
jha192001
Messages
22
Reaction score
2
Does the term center of mass of universe mean anything? Why why not?
 
Physics news on Phys.org
jha192001 said:
Does the term center of mass of universe mean anything? Why why not?
No, for something to have a center of mass, it has to have a center and the universe does not.

I recommend the link in my signature
 
phinds said:
No, for something to have a center of mass, it has to have a center and the universe does not.

I recommend the link in my signature
What do you mean by centre? does every body has a geometrical centre what does geometrical centre even mean?
 
Last edited by a moderator:
jha192001 said:
Does the term center of mass of universe mean anything? Why why not?
Not in standard cosmology. The standard cosmology assumes that the universe is spatially homogenous and isotropic. The homogeneity precludes having a center.
 

Thread 'The Physics of unloading sand from a barge'

I think it's easist first to watch a short vidio clip I find these videos very relaxing to watch .. I got to thinking is this being done in the most efficient way? The sand has to be suspended in the water to move it to the outlet ... The faster the water , the more turbulance and the sand stays suspended, so it seems to me the rule of thumb is the hose be aimed towards the outlet at all times .. Many times the workers hit the sand directly which will greatly reduce the water...
View full post »

Similar threads

I Is anything in the physical world infinite?
2
Replies
79
Views
8K
I Seeking intuition on movement of COM
Replies
2
Views
1K
I Gravity does negative or positive work with cosmos redshift?
Replies
7
Views
3K
A Why does the principle of stationary action work?
Replies
3
Views
2K
I Why does a free rigid body rotate only about its COM when F(ext) is applied?
Replies
7
Views
1K
B Can I have $5 Million for my Knowledge
Replies
1
Views
1K
Are present and future perspectives different?
Replies
16
Views
2K
B Movement in a Vacuum: Does Acceleration Show Anything?
Replies
12
Views
11K
I Why is the speed of light the same everywhere in the Universe?
2
Replies
59
Views
9K
I Circumnavigating the Universe in Cosmos (1980)
Replies
21
Views
1K

Hot Threads

Recent Insights

Back
Top