This leads to a critical idea in science, that there will always be unstated criteria for choosing one theory over another. Rival paradigms will regard different kinds of questions as legitimate or meaningful. A void exists. Natural motion is not uniform in speed, but has acceleration toward the Earth. Natural motion not linearly dependent on weight of objects.
Unnatural motion is due to transfer of motive force to object in motion.
Motion of astronomical objects is circular and constant uniform speed. Sun, Moon, five planets, and all stars together revolve around Earth on 8 concentric spheres in uniform circular motion. Astronomical objects also revolve around smaller epicycle spheres embedded in the deferent spheres. Accumulation of facts is goal of science. Science is exact.