'nothing' happened before the big bang?

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Discussion Overview

The discussion revolves around the concept of what occurred before the Big Bang, exploring the nature of the universe's origin and the implications of "nothingness." Participants express curiosity about causation in relation to the Big Bang and consider various hypotheses regarding its cause.

Discussion Character

  • Exploratory
  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • One participant expresses confusion about the concept of "nothing" preceding the Big Bang, suggesting that there must be a cause for everything, and proposes that particle and anti-particle interactions could have led to the Big Bang.
  • Another participant notes the limitations of current technology and physics in testing ideas about events before the first Planck second, indicating that the annihilation of particles likely occurred after the Big Bang rather than before it.
  • A third participant acknowledges the mystery of the Big Bang and references an article titled "A Universe from Nothing," suggesting that the origins of the universe may involve complex and profound concepts.
  • One participant reflects on the philosophical implications of the universe's origin, contemplating whether it came from nothing or if there is a deeper key to understanding it.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the nature of what happened before the Big Bang, with multiple competing views and uncertainties expressed throughout the discussion.

Contextual Notes

Participants acknowledge the challenges in understanding events prior to the Big Bang, particularly the limitations imposed by current scientific knowledge and technology. There is also an indication that the discussion may involve assumptions about causation that are not universally agreed upon.

varsha
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from when i was 10-11 years old, i have been told that there was a big bang and the universe has been expanding because of it. but my curiosity grew and wanted to know what caused it. but i was surprised to know that 'nothing' happened before the big bang. as i know there is a cause for everything. but the big bang doesn't. i 'think' that the interaction of the particles and their antiparticles caused the annihilation which we call 'big bang'.(please correct me if i have not used the right terms or if it doesn't make sence. I'm 14 and am still learning.)
please tell me what you think caused the big bang. your views.
 
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It's certainly an interesting question varsha! :smile:

However, there's pretty close to nothing - that I'm aware of - which you (or anyone on Earth) could do, today, with the technology we have (and the physics we've given gold stars to) that could seriously test anyone's ideas of any time 'before' the first Planck second (approx 10-43 of our ordinary seconds).

As to your idea about particle and anti-particle annihilation, well, the universe almost certainly went through a period when that happened (at least for the kinds of particles and anti-particles we know about), but it was well after the BB.
 
The big bang certainly is a mystery. Just getting there - much less 'peeking' behind the Planck wall - is enormously difficult, as Nereid noted. You may find this interesting:

A Universe from Nothing
http://www.astrosociety.org/pubs/mercury/31_02/nothing.html
 
it was interesting... I'm sort of getting this feeling... either the universe came from nothing or there is some key to this which is very deep. it's like how a simple question like what made the apple fall?, had such a huge answer...
 
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