Is Cosmos Homogeneous, Isotropic ?

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Discussion Overview

The discussion centers on the homogeneity and isotropy of the universe, exploring whether the cosmos exhibits these properties based on the structure of spacetime and observational evidence. Participants examine various models and interpretations related to the distribution of galaxies and cosmic structures.

Discussion Character

  • Debate/contested
  • Exploratory
  • Technical explanation

Main Points Raised

  • Some participants question the isotropy of the universe, citing research by David Koo and TJ Broadhurst that suggests the presence of super galaxy clusters in long strips separated by voids, which may indicate a non-isotropic structure.
  • One participant expresses a desire to use the evidence of galaxy distribution to support their own theories regarding the local structure of spacetime.
  • There are references to various images and data that illustrate the distribution of galaxies, with some participants noting that the universe appears uniform on a large scale but not locally.
  • Another participant humorously describes the universe as resembling a "foamy bubblebath," suggesting a complex structure that challenges the notion of isotropy.

Areas of Agreement / Disagreement

Participants do not appear to reach a consensus on whether the universe is homogeneous and isotropic, with multiple competing views and interpretations presented throughout the discussion.

Contextual Notes

Some claims rely on specific observational data and interpretations that may not be universally accepted, and there are unresolved questions regarding the implications of the presented evidence for the overall structure of the universe.

Antonio Lao
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Is Cosmos Homogeneous, Isotropic ?

Is the universe really homogeneous and isotropic? The answer is hidden within the structure of spacetime.
 
Space news on Phys.org
complex universe yes: isotropic ? I'm betting no.

David Koo and TJ Broadhurst mapped a number of super galaxy clusters and found broad bands of clusters in long strips separated by huge voids evenly spaced some 600 million light years across. Some calculations indicate the formation of these bands would require 150 billion years + to form. In any event the evidence they presented indicates anything but an isotropic universe.
 
Thanks, geistkiesel.

I hope to use this evidence to partly support what I am theorizing for the local structure of spacetime.
 
setAI,

I can't link any of these images.
 
Antonio Lao said:
setAI,

I can't link any of these images.


I've noticed that these don't link correctly in some browsers- but if you right-click and copy shortcut- then paste the shortcut in a new window- they should work-
 
setAI,

I can link by going outside of the forum. Is this image showing the visible universe centered at the Virgo supercluster? The distribution seems uniform globally but not locally. What's the interpretation by cosmologists?
 
those images came from the Atlas of the Universe site [ http://www.anzwers.org/free/universe/index.html ]- based from all the best astronomy data- closer in you would see the cellular voids surrounded by sheets and filaments of galaxies http://www.anzwers.org/free/universe/supercls.gif you can really see the exact cellular/foamy/spongey/bubbly structure in the 2d red-shift survey http://magnum.anu.edu.au/~TDFgg/Public/Pics/2dFzcone.jpg

apperently the universe is just an extra foamy bubblebath :biggrin:

___________________________

/:set\AI transmedia laboratories

http://setai-transmedia.com
 
Last edited by a moderator:
setAI,

Thanks again for these breathtaking plots of galaxies. I think it is quite obvious how the universe looks all the way to 14 billions years.
 

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