Why Big Bang has not repeated?

I think that, to be honest, there can be no 'expert' opinion, since it is all theory!

It is my belief that the universe is likely to be cyclical. There can be no proof of that at the moment, since all that we can observe suggests that the universe is currently expanding and has done so from the beginning of what we call time. This does not preclude the possibility that, at some point, it may slow and stop and begin contracting until all matter is once again concentrated in one point.

Since our conception of time is also dependent on things to do with the expansion of the universe, it is possible that this may involve a reversal of time itself. Whether this cycle of expansion and contraction would then represent the kind of scenario suggested in the film Groundhog Day is difficult to say!

Hm. How probable is it that a series of "positive accidents" happen in any way, and lead us to what we are after a 13 billion year spawn? Any step forward could have been countered at any time by three accidental steps backward, because the "unfavorable accidents" are just as probable as the positive ones in random conditions, and because any chemical reaction that contributes to the beginning of life, <any one reaction> for that matter, can be reversed according to Le Chatelier's principle.

Of course some reactions in normal conditions tend to go one way rather than the other. But again, why are those conditions constant and set since so long? Is that a "constant accident"? Or is it just meant to be... Chemical properties lead to these conditions. Still, <why chemical properties>?

Some ancient sages considered that the upper sky is, among other things, a giant clock. The ancient analogical clock is indeed built like a solar system, with two planets revolving around a hot spot at constant speed... and I guess that the big bang, like other events, are just made to happen when particular hours are reached in the giant void beyond.

Sure, the universe is 13.7 billion years old - but maybe the circumstances that lead to a big bang don't happen nearly that often. If there had been multiple big bangs, we wouldn't see all the galaxies receeding towards the same spot. And microwave background radiation isn't an interference pattern - it would look more predictable if it was.

i think that, to be honest, there can be no 'expert' opinion, since it is all theory!

It is my belief that the universe is likely to be cyclical. There can be no proof of that at the moment, since all that we can observe suggests that the universe is currently expanding and has done so from the beginning of what we call time. This does not preclude the possibility that, at some point, it may slow and stop and begin contracting until all matter is once again concentrated in one point.

Since our conception of time is also dependent on things to do with the expansion of the universe, it is possible that this may involve a reversal of time itself. Whether this cycle of expansion and contraction would then represent the kind of scenario suggested in the film Groundhog Day is difficult to say!

Not expert. Why do you assume that the big bang has not repeated an infinite number of times? There wouldn't be any clues after the entire universe collapsed in on itself and "Banged".

The Big Bang is a theory ,not necessarily a fact.

Something which is imaginary cannot be repeated because its not real.

However ;The Holy Bible does Mention a restructuring of the Universe(nothing to do with the Big Bang)

well, the big bang is being repeated, it's the way the universe keeps expanding.

the big bang wasnt causeless. it is the reason why we have the univ. anyway, we will have what we call big crunch. it destroys the universe