"Let there be Light" A belief in a Creator God is more logical. Otherwise, there are no real absolutes, but different opinions, or beliefs. Which brings in philosophies of all of life is an illusion or simulation, which essentially makes it pointless.
The Study of Physics, and Chemistry are essentially a description of how things work or function, based on mathematical principles, that can quantify things, again pointing to a Creator God who designed the universe to work that way. But, that cannot be proven as objective fact, because there is no videotape of the acts of early creation that one can look at. That crosses a barrier and makes it a belief based on faith, in that what man can observe is REAL, I think therefore I am.... And scientists can start with principles, even assumptions about that reality, that lay a foundation for describing, either with Physics, Chemistry, and Biology, how everything is ordered, makes sense, and from that how things function.