Inflation
"Many secular astronomers have come up with an idea called “inflation” in an attempt to address the flatness and monopole problems (as well as other problems not addressed in detail here, such as the horizon problem).
---Inflation proposes that the universe temporarily went through a period of accelerated expansion.
Amazingly, there is no real supporting evidence for inflation; it appears to be nothing more than an unsubstantiated conjecture—much like the big bang itself.
*Moreover, the inflation idea has difficulties of its own, such as what would start it and how it would stop smoothly.
In addition, other problems with the big bang are not solved, even if inflation were true."
AIG
And God said, Let there be light: and there was light. Genesis 1:3