Sir Isaac Newton's "Philosophiæ Naturalis Principia Mathematica"

Sir Isaac Newton's "Philosophiæ Naturalis Principia Mathematica," commonly known as the Principia, is a foundational scientific work published in 1687. It formulates the laws of motion and universal gravitation, explaining how objects move on Earth and in space. Newton showed that the same natural laws apply everywhere, unifying celestial and terrestrial mechanics. His work provided a mathematical framework that revolutionized physics and astronomy, enabling precise predictions of planetary motion, tides, and objects falling under gravity. The Principia remains a cornerstone of classical physics, shaping our understanding of the physical universe.