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Originally Posted by Gem
Big bang theory has no 'before the universe'. It's just the universe was small and very very hot before it started expanding. At first it expanded very fast indeed until it cooled off and subatomic particles could form, they themselves being vibrational variences in differing densities in the fabric of empty space.
The emptiness itself still has density in relation to the scale, and there is no 'zero density', it pans out and has a minimal value called the cosmological constant.
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That is what I said Gem....with this thread I aimed to look at what was before the Big Bang. Scientist are now looking further and further into the possibility that the Big Bang might have not been the beginning of everything and that they have discovered even knew clues to believing that the Big Bang has happened before maybe more that once before. Here is one link:
http://www.space.com/6303-glimpse-big-bang.html