I eagerly await your explanation of the Cosmic Microwave Background... Oh wait, that had already been predicted before it was observed, by standard Big Bang theory. It is even isotropic to exactly the extent predicted.
There were many theories hopping about before the background radiation was discovered. The Big 2 theories in 1964 were "the Steady State theory, supported by Fred Hoyle, and the Big Bang theory of George Gamow. "Hoyle maintained that the universe has no beginning or end and that, as the universe expands, matter is spontaneously created to maintain the constant density of the universe."
I rather like the beauty of the Steady State theory but it is the LEAST comparable to the Biblical description.
Isn't it interesting that of the several theories abounding at the time the theory that most closely aligns with the Biblical text is the current popular Big bang theory?
And then the Big Bang theory was expanded to suggest an oscillating universe, bang-swoosh-suck-bang-swoosh-suck-bang...to the nth term to infinity. That was much less Biblical. God only did it once, so far. Now that oscilaltion idea has been cut down at the knees, so we are back to the Big bang again,..."and then there was light".
"..and then there was cosmic microwave radiation"..also..which of course is light in the non-visible spectrum.
So I do not see how the background radiation is inconsistent with the Bible.
Then God said, “Let there be light”; and there was light. 4And God saw the light, that it was good; and God divided the light from the darkness." -- Genesis 1:3