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The question is, what was before Big Bang 13 billions years ago.. I know that Big Bang is questioned as a four-dimension fact. So time was one dimension and it was created in a moment of Big Bang. There is also bran cosmology that describes alternatives, but i know just that from wikipedia. Is there any eager to answer me simply, what was before? Or, if universe started with its time-dimension, so when something starts, then should end, so what would happen if it ends. If the answer is, we don't know what was before big bang and don't know what would be after time finishes? It's quite complex.

  • Where did you get the idea that time was created at the moment of the big bang (citation please)? – Drux Sep 8 '14 at 19:22
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    Or more importantly the idea that "the big bang is questioned as a four-dimension fact" – virmaior Sep 8 '14 at 22:55
  • Marcus Chown, Govert Shilling "Tweeting the Universe. Tiny Explanation of Very Big Ideas" - there is written about four dimension Big Bang. – cyan Sep 12 '14 at 7:53
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Kant wrote about this question in his "Critique of Pure Reason". The first antinomy of pure reason is exactly about this. With a proof by contradiction he tries to prove that the world must have a beginning. Also (this is the mind-boggling part) he proves, that the world can not have a beginning. His idea was to show, that we are simply incapable of dealing with that question. Why is that?

If you are a Christian you might believe that in the beginning there was the word. If you are a scientist you might believe that in the beginning there was the Big Bang. Either way, the very concept of time demands that there is something that happened before: God thought that now is the time to say the word or a quantum fluctuation happened. So if you are trying to grasp the beginning don't think of the word, don't think of the Big Bang, don't think of all the stuff that happened before that, think of the beginning. Are you there? Did something happen before the moment you are thinking of?

  • If "yes": Something happened before the beginning?! You are doing it wrong! Think of the beginning!

  • If "no": What was a second before the moment you are thinking of? It doesn't matter how you answering that question. Even if you say "Nothing" you are admitting that there was a second before the beginning[1]. You are doing it wrong! Think of the beginning!

Kant's point is: It really doesn't matter what you are thinking of when you think of the beginning: You are doing it wrong! What you are trying to do is applying concepts that are valid for specific entities (like the earth, the sun, your parents) to "everythingness" (i.e. the universe) itself. It does not work, you will always fail. We are at the limit of what we can know. Beyond that we cannot know anything.

[1] It does not help if you say: "Well, that was before time began". There was a "before"?!. You are doing it wrong!

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If you accept the idea that the universe started with time and not in time then "the question 'What happened before the big bang?' is meaningless." - see this article by Paul Davies

  • Yes i agree with Biblical "Let the light begin" and asking about time is meaningless truly. But there are things in Math like Klein Bottle. Assume we live in four dimensions and Big Bang was in that four dimension. But if The universe would be in eight dimensions - assume universe start and begin in n seconds time. Then we can have first four dimensions are zero for n seconds time, then it changes to second four dimensions to zero and first four with values - that is our Universe..And like in Klein bottle - we dont know what is outside our four dim. – cyan Sep 6 '14 at 15:38
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    I can't make any sense out of your comment – nir Sep 6 '14 at 15:48
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Swami Vivekananda speaking in the late 1890s said - "We believe in nature being without beginning and without end; only at psychological periods this gross material world of the outer universe goes back to its finer state, thus to remain for a certain period, again to be projected outside to manifest all this infinite panorama we call nature. This wavelike motion was going on even before time began, through eternity, and will remain for an infinite period of time." The Complete Works of Swami Vivekananda, Vol. 3, p. 374.

There were an infinite number of universes before and there will be an infinite number of universes in the future. There is no creation per se. There is only projection.

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