Newton's Principia Published

Isaac Newton's groundbreaking work 'Philosophiæ Naturalis Principia Mathematica' was published on July 5, 1687, under the auspices of the Royal Society and funded by astronomer Edmond Halley. The Principia established the three laws of motion and universal gravitation, explaining planetary orbits and providing mathematical proof for heliocentrism. By deriving Kepler's laws from his gravitational theory, Newton conclusively validated the Sun-centered model of the cosmos. The work unified celestial and terrestrial physics, demonstrating that the same principles governing falling objects on Earth also explained the motion of planets and moons, revolutionizing our understanding of the physical world.