Is Every Galaxy the Center of the Universe?

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The discussion explores the concept of whether every galaxy can be considered the center of the universe, emphasizing that the universe is homogeneous and isotropic, meaning all galaxies observe others receding from them without a specific center. It argues that while the universe may appear infinite, we cannot definitively prove this, as observations suggest it could be open yet finite. The conversation also touches on the implications of the Big Bang theory, questioning how an infinite universe can expand from a singular point. Additionally, the complexities of space-time and the nature of dimensions are debated, highlighting that cosmological scales differ from local gravitational effects. Ultimately, the idea of a "center" in a four-dimensional space remains a challenging concept to define.
  • #51
Chronos said:
It would, I think, be fair to say that empty space arose as a consequence of matter. Matter had issues and needed time to think. So it created space to separate itself from its brethren - then it inflated space to buy some additional time. This impish idea created entropy, which can never be decreased so long as time, another poorly thought out idea, continues to exist.

Actually, given the scientific bent of the author, I find this extremely clever. However, he and I both know he is being a naughty boy.
 
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  • #52
Eric England said:
Plank time says space, time, and mass is > 0... doesn't it?

So what = 0?
I do not understand what you are trying to say. Could you state your question more clearly please?
 
  • #53
EL said:
I do not understand what you are trying to say. Could you state your question more clearly please?

Which one are you unclear about?
 
  • #54
So doesn't the big bang = 0?
0 of what?

Doesn't the "before" the big bang have nothing to do with time, space, or mass? Isn't it a question of what the 0 is "inside" of?
What is "the 0"?

Eric England said:
Plank time says space, time, and mass is > 0... doesn't it?
Planck time is a certain amount of time. How could it say anything?

So what = 0?
I simply do not understand anything about this question.
 
Last edited:
  • #55
"0 of what?"... time, space, and mass.

"What is the 0?"... a dimensionless point at the center of 1.

"Planck time is a certain amount of time. How could it say anything?"... is is a "knowable" condition of space and mass being >0 at the "time" of time being >0
 
  • #56
0 is the dimensionless point at the center of 1?

Come on, Eric... please respect our guidelines, as I explained. Thread locked.

- Warren
 

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