They can “prove it” in the sense of setting forth more detail about what the bible calls the glory of God.
But even yet, recourse to spirituality is needed to complete the picture. Even psychology is dreadfully difficult to treat as a science, how much more spirituality.
Please note that I said could not *definitively* prove.Of course when one ponders the solar system (just to cite *one* example) a sense of majesty results and such a person must,unless he or she was a strident atheist,recognize that it's highly unlikely to have happened just happen "by accident".