Universal Gravitation

Newton's law that every mass attracts every other with a force proportional to their masses and inversely proportional to the square of the distance between them. Published in the Principia, it explained Kepler's laws, the tides, and the motion of comets from a single principle, uniting terrestrial and celestial physics.

• The Periodicity of Halley's Comet1705 CE
• The Prediction and Discovery of Neptune1846 CE

• Philosophiæ Naturalis Principia Mathematica1687 CE

• Confirmed byThe Periodicity of Halley's Comet
• Confirmed byThe Prediction and Discovery of Neptune
• Introduced byPhilosophiæ Naturalis Principia Mathematica
• Developed byIsaac Newton
• Part ofThe Scientific Revolution
• Associated withThe Restricted Three-Body Problem
• Associated withEscape Velocity
• Associated withCircular Orbital Velocity
• Associated withSurface Gravity
• Associated withMean Density