Is Physics Based on Fact or Intuition?

At the very root or fundamental level of our existence we have space, time and twenty-five elementary particles that we can prove exist that make up our Universe. Physicists attempt to theoretically explain how those twenty-five particles relate to each other in order to provide a working model that represents our experience of a dimensional particle reality or how reality works. How do you and I and all the space between us work so that the stars and galaxies can rotate with such precision, and we can each have our own separate experience of reality?