How did Isaac newton made his discoveries about gravity?

Isaac newton formulated his theories on gravity through a combination of mathematical reasoning and careful observation of natural phenomena. He was inspired by the sight of an Apple falling from a tree, which led him to ponder the forces acting on objects. By developing his laws of motion and the law of universal gravitation, he mathematically described how objects attract each other based on their mass and distance. His groundbreaking work was published in "Mathematical Principles of Natural Philosophy" in 1687, laying the foundation for classical mechanics.