"The big bang attempts to explain the beginning of the universe.
Q: However, what did it begin from and what caused it to begin? Ultimately, it could not have come from a matter/energy source, the
same sort of stuff as our universe, because that matter/energy should also be subject to the same physical laws, and therefore decay, and it would have had a beginning too, just further back in time.So, it had to come from? Nothing! Nothing became everything with no cause whatsoever.
“The universe burst into something from absolutely nothing—zero, nada. And as it got bigger, it became filled with even more stuff that came from absolutely nowhere. How is that possible? Ask Alan Guth. His theory of inflation helps explain everything.”
So proclaimed the front cover of Discover magazine, April 2002.
Physicist Lawrence Krauss, one of the loud ‘new Atheists’, has tried to explain how everything came from nothing; he even wrote a book about it.
However, his ‘nothing’ is a ‘quantum vacuum’, which is not actually
nothing. Indeed, a matter/energy quantum something has exactly the same
problem as eternal universes; it cannot have persisted for eternity in
the past, so all their theorizing only applies after the universe
(something) exists. Back to square one!" CMI