What is the evidence and history behind the Big Bang Theory?

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Discussion Overview

The discussion revolves around the Big Bang Theory (BBT), exploring its supporting evidence, historical context, and alternative theories such as the Big Bounce. Participants express varying levels of agreement and skepticism regarding the BBT and its implications for cosmology.

Discussion Character

  • Debate/contested
  • Exploratory
  • Technical explanation

Main Points Raised

  • Some participants present links and resources supporting the Big Bang Theory, indicating a desire to discuss its foundational evidence.
  • One participant proposes a sequence of events where space-time inflates before matter forms, suggesting this process mitigates issues related to infinite gravity in the BBT.
  • Another participant raises the concept of the Big Bounce, questioning the current focus on the Big Bang and suggesting that discussions around singularities may be outdated.
  • A later reply asserts that the BBT is no longer debated in mainstream science, suggesting that discussions should focus on alternative models like the Big Bounce in separate threads.

Areas of Agreement / Disagreement

Participants exhibit disagreement regarding the acceptance of the Big Bang Theory, with some supporting it and others advocating for alternative theories like the Big Bounce. The discussion remains unresolved, with no consensus on the validity of the BBT versus competing models.

Contextual Notes

Participants express varying degrees of understanding and acceptance of the BBT, indicating that there may be limitations in the assumptions made about the theory and its alternatives. The discussion also highlights the evolving nature of cosmological theories and the need for clarity on definitions.

Who May Find This Useful

This discussion may be of interest to individuals exploring cosmology, the history of scientific theories, and alternative models in the field of astrophysics.

Sundance
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Hello All

Reading many posts I find people not understanding the theory behind the Big Bang.

I do not agree with the BBT, but! that does not make me right. I'm not emotionally attached to any theory.

Here are some links in support of the Big Bang, later I will post against. For now maybe discuss the supporting issues.

Tango at your speed.

Big Bang Nucleosynthesis
http://www.astro.ucla.edu/~wright/BBNS.html

A Glimpse of the Young Milky Way
http://www.eso.org/public/outreach/press-rel/pr-2002/pr-19-02.html

Evidence for the Big Bang
http://www.talkorigins.org/faqs/astronomy/bigbang.html#firstlaw

Frequently Asked Questions in Cosmology
http://www.astro.ucla.edu/~wright/cosmology_faq.html#XIN

History of the Big Bang Theory
http://astrophysics.suite101.com/article.cfm/history_of_the_big_bang_theory

Chapter 10 Origin of the Elements
http://www.lbl.gov/abc/wallchart/teachersguide/pdf/Chap10.pdf

Mysterious iron factory in the Early Universe
http://www.mpe-garching.mpg.de/Highlights/pr20020708.html

Phase Transitions in the Early Universe
http://www.damtp.cam.ac.uk/user/gr/public/cs_phase.html

THE BIG BANG:
http://www.umich.edu/~gs265/bigbang.htm

Foundations of Big Bang Cosmology
http://map.gsfc.nasa.gov/m_uni/uni_101bb2.html

If anybody has links that can support the Big Bang, please post them.
 
Last edited by a moderator:
Space news on Phys.org
Space-time inflated then matter came later and fell together. And by this then radiated. This way of creating matter with finite density allows the Big Bang to get over its limiting infinite gravity.

Space first then matter then radiation to go Bang!
 
Sundance said:
...

Reading many posts I find people not understanding the theory behind the Big Bang.

...

What do you have about the Big Bounce? Lately I don't hear so much talk about big "bang" and "singularity". Instead i hear about the proposed cosmological bounce.

This proposal goes back in time a little before where the old singularity was supposed to be.

Do you have any links about the Bounce? do you have some explanation or support links?
Please add them to your list!
 

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