Question: Expansion of the universe

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    Expansion Universe
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Discussion Overview

The discussion revolves around the concept of the expansion of the universe, particularly in relation to the Big Bang and the implications of its perceived location in space. Participants explore the nature of the universe's expansion and the observational limitations stemming from this model.

Discussion Character

  • Exploratory
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • One participant questions the idea of a "middle" in the context of the Big Bang, suggesting that if it were in the center, then observers would be unable to see what lies on the opposite side.
  • Another participant asserts that there is no center to the Big Bang, challenging the notion of left and right sides in this context.
  • A third participant recommends a balloon analogy to help clarify the concept of cosmic expansion and suggests various resources for further reading on cosmology.
  • Additional resources are provided, including articles on redshift, expansion, and historical perspectives on cosmology, indicating a wealth of literature available for those interested in the topic.

Areas of Agreement / Disagreement

Participants express differing views on the nature of the Big Bang and its implications for observation. There is no consensus on the conceptual framework of the universe's expansion, as some challenge the idea of a central point while others seek to clarify misconceptions.

Contextual Notes

Some statements rely on specific interpretations of cosmological models, and there are references to potential misconceptions that may not be universally accepted. The discussion includes various suggested readings that may contain differing perspectives on the topics raised.

IMLearningEng
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Hello, I started this account to ask you about that, if the place of big bang was in the middle and we are on its right side, we can't observe that what was on the left side?
My train of thought: << (Left side, object) <<<(Big Bang)>>> (Right side, we) >>
 
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IMLearningEng said:
Hello, I started this account to ask you about that, if the place of big bang was in the middle and we are on its right side, we can't observe that what was on the left side?
My train of thought: << (Left side, object) <<<(Big Bang)>>> (Right side, we) >>

There was no "middle" to the big bang, no center, no left side, no right side.

I recommend the link in my signature.
 
Ok, thank you :)
 
Phind's Excellent Balloon analogy will fill in a lot of gaps, for further reading I ercommend the following, and yes the links are under my signature as well. This question is so common its handy to have on hand.

You will find various literature to study and get started in Cosmology under my signature at,

http://cosmology101.wikidot.com/main
particular articles of interest are,

http://cosmology101.wikidot.com/redshift-and-expansion, (note I have a few minor metric corrections to make on this one, but overall still accurate)
http://cosmology101.wikidot.com/universe-geometry

some excellent articles with visual graphs etc. Will definitely clear up some misconceptions.

http://arxiv.org/abs/1304.4446 :"What we have leaned from Observational Cosmology." -A handy write up on observational cosmology in accordance with the LambdaCDM model. ( FAQ style catch up )
http://arxiv.org/abs/astro-ph/0310808 :"Expanding Confusion: common misconceptions of cosmological horizons and the superluminal expansion of the Universe" Lineweaver and Davies
http://www.mso.anu.edu.au/~charley/papers/LineweaverDavisSciAm.pdf: "Misconceptions about the Big bang" also Lineweaver and Davies

if your interested this is a very basic article on relativity its more a historical reference article.

http://www.gutenberg.org/files/30155/30155-pdf.pdf: "Relativity: The Special and General Theory" by Albert Einstein

As far as historical references I've compiled numerous articles. Including

http://arxiv.org/abs/1302.1498 " “The Waters I am Entering No One yet Has Crossed”: Alexander Friedman and the Origins of Modern Cosmology" written by Ari Belenkiy

http://www.astrosurf.com/luxorion/hubble-law-redshift1929.htm
Reprint of one of Hubbles papers

http://apod.nasa.gov/diamond_jubilee/debate20.html
The "Great debate of the 20's" jubilee reprint article avalable

The historical articles will help show how much as changed in the last century. Feel free to ask any questions and enjoy
 
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