Ah, Joralex, Prophet of the God of the Gaps.
Once upon a time, there were two camps of scientists when it came to the age of the universe. The geologists insisted that the world's age was measured in the billions. All of their evidence pointed to it. The astronomers, however, insisted that Earth's age was in the millions. All of their evidence pointed to it. The difference couldn't be reconciled.
What was wrong? Well, the astronomical model for how the sun formed and released heat was only partially right. All calculations showed that it was impossible to be just a big ball of fire; it had to be something more. However, the concepts of fission and fusion were unknown at the time. Their model was gravitational collapse - which actually does power stars in their early stages, but can't last for more than a few million years.
All of the sudden, fusion was discovered. Suddenly, everything *fit*. They looked again at the spectral readings from the stars, and realized that they fit with fusion. They did the math, and fusion would mean that, for the sun to get its current composition, it would have to have formed about 4.5 billion years ago. The sun's magnetic field was explained. All sorts of things just suddenly "clicked". Science has had numerous moments like this.
In modern day, the basic physical laws are largely very well understood (although we're still searching for that unifying theory...) So, for the most part, that which is not yet known is that for which there is not enough computing power to fully simulate. That's a pretty small gap to stick your God into.
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"Illuminant light,
illuminate me."
™ Version 4.2