Isaac Newton used his laws of motion and gravity to generalize Kepler's third law of planet orbits to cover any case where one object orbits another.
(Isaac Newton; used; his laws of motion and gravity; to generalize Kepler's third law of planet orbits) (one object; orbits; another; L:any case)
Isaac Newton one object
used orbits
his laws of motion and gravity to generalize Kepler's third law of planet orbits
another L:any case