In 1687, Isaac Newton published Philosophiae Naturalis Principia Mathematica (Mathematical Principles of Natural Philosophy), a work so far-reaching in its depth and breadth that it shattered the past and shaped a new landscape for the future of science. Among its revelations: Newton’s law of universal gravitation. Hooke, however, argued that he had formulated the laws of gravitation earlier, and that Newton had plagiarized his observations.