Isaac Newton's "Philosophiæ Naturalis Principia Mathematica"

Isaac Newton's "Philosophiæ Naturalis Principia Mathematica" (Principia) is a foundational work that formalized the laws of motion and universal gravitation. It explains how objects move both on Earth and in space, showing that the same natural principles govern everything. Newton described how forces like gravity cause planets to orbit the Sun and how objects fall to the ground. His work laid the groundwork for classical physics, providing mathematical laws that predict movement and interactions of objects with remarkable accuracy, fundamentally transforming our understanding of the physical universe.