Full Idea
Aristotelian physics assumed that celestial motion is naturally circular and eternal while terrestrial motion is naturally toward the center of the earth and final.
Gist of Idea
Aristotelian physics has circular celestial motion and linear earthly motion
Source
Geoffrey Gorham (Philosophy of Science [2009], 4)
Book Reference
Gorham,Geoffrey: 'Philosophy of Science' [One World 2009], p.110
A Reaction
The overthrow of this by Galileo and then Newton may have been the most dramatic revolution of the new science. It opened up the possibility of universal laws of physics.