"The findings released Thursday bolster a key theory called inflation, which says the universe burst from subatomic size to its now-observable expanse in a fraction of a second.
The Big Bang is the most comprehensive theory of the universe’s beginning. It says the visible portion of the universe was smaller than an atom when, in a split second, it exploded, cooled and expanded rapidly, much faster than the speed of light.
The European Space Agency’s Planck space probe looked back at the afterglow of the Big Bang, and those results have now added about 80 million years to the universe’s age, putting it 13.81 billion years old."
Did you get that? The universe began as something "smaller than an atom". And after the Big Bang, we had a universe.
In other words, before the Big Bang = one atom. After the Big Bang = universe.
I'm still waiting to see how the atheists can provide us with an answer, that explains this amazing scientific feat, that isn't God.