Newton's Principia Mathematica

Newton's *Principia Mathematica*, published in 1687, is a groundbreaking work that formulated the laws of motion and universal gravitation. It explains how objects move on Earth and in space, showing that gravity is the force that pulls objects toward each other, from apples falling to planets orbiting the Sun. Newton's laws describe how forces influence motion, providing the foundation for classical mechanics. This work unified physics into a coherent system, allowing scientists to predict the behavior of physical systems with remarkable accuracy and setting the stage for modern science and engineering.