KnowraClaudius PtolemyLinked fromLinked fromThe 14 pages that link to Claudius Ptolemy, each with the reason it gives.All 14Related 12Compared with 2Kepler's laws of planetary motionCompared with: Kepler's heliocentric ellipses replaced a tradition of geometrically elaborate circular models.Celestial mechanicsRelated: His geocentric system shaped mathematical astronomy before heliocentric models prevailed.Map projectionRelated: His treatise transmitted and developed projection methods in ancient cartography.AlmagestRelated: He composed the astronomical treatise and its mathematical models.Ptolemaic systemRelated: He assembled and refined the system’s models into a durable astronomical framework.EratosthenesRelated: His geography continued the mathematical mapping tradition to which Eratosthenes contributed.History of astronomyRelated: His synthesis became the main reference for geocentric mathematical astronomy for many centuries.Celestial spheresRelated: His influential mathematical astronomy became a major framework interpreted through celestial spheres.Theon of AlexandriaRelated: Theon’s astronomical teaching and commentary transmitted Ptolemy’s mathematical system.Martin WaldseemüllerRelated: Waldseemüller combined Ptolemaic geography with information from recent voyages.Messier 7Related: His star catalogue recorded the hazy object later identified with Messier 7.NabonassarCompared with: Ptolemy, unlike Nabonassar, is known chiefly as the later scholar who preserved the epoch’s astronomical use.Science in classical antiquityRelated: His mathematical astronomy became a major reference point across Greek, Roman, and later scholarly traditions.ScythiaRelated: His mapmaking shows how later ancient geography systematized the name Scythia.