Tesaurus d'Art i Arquitectura Getty Institute 0000-00-00 2024-01-24 15:40:44 en armillary spheres300226858armillary spheresphere, armillaryspheres, armillary Skeleton models of the celestial sphere, generally having the earth at the center, consisting of a framework of rings depicting the relative position of such astronomical elements as the celestial equator, the ecliptic, the zodiac, and the planets. They were first developed by the ancient Greeks and used especially during the 14th through 16th centuries as an aid to navigation. esfera armil·lar esferas armilares 2026-03-30 20:56:04