Unfortunately my PC lacks audio ATM, but there should be something of
interest on the topic here:
http://thesciencenetwork.org/tags/Big+Bang
It's not the only place with some popular modern cosmology, but it's as good a start as any.
Quote:
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scientists believe things can magically pop into existence all by itself?
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In short: yes.
There are theories popular amongst physicists at the moment that predict
an abundance of things poping into existence everywhere, constantly for
very small periods of time.
but you don't need a physicist to tell you that if there was ever a state in
which nothing existed, it was not a stable state. The universe is evidence
of that.