It is currently quite certain that a Big Bang DID occur. It is NOT known what triggered it.
Unknown - probably unknowable.
According to the believes of physics and the big bang, we know that the big bang was both big and a bang. Since we are still receiving radiation from the big bang, So considering that factor I would say that it was big and a bang. What do you believe?
Big Bang - Big Bang album - was created on 2009-08-19.
the red shift: planets are moving away from us therefore appear red. This implies that the universe is always expanding and so started from a very small and dense space ... The big bang was what triggered the change from small to ever expanding
Current theory is the Big Bang
The Best of Big Bang
How did it what? - It isn't known what caused the Big Bang, if that's what you mean.
The big bang created itself.
big bang: This is the big bang theory
the big bang of couse
The big bang is a theory.
Big Bang Tornado
Everything we know of happened after the Big Bang.