Fisica, cosmologia e filosofia. Da Copernico a Newton

The essay analyses the development of cosmology from Copernicus to Newton, showing its relations with mechanics and physics in general. Beginning with Kepler's celestial physics and his first solution to the question left open by the dissolution of the celestial spheres, the essay reconstructs the most significant stages that led, through Galileo, to Newton's new system of the world in his Principia, which sanctioned the unification of terrestrial and heavenly phenomena, definitively demolishing the traditional dogma of an ontological difference between the terrestrial and heavenly worlds, i.e. between mechanics and astronomy.