KnowraCelestial spheresLinked fromLinked fromThe 6 pages that link to Celestial spheres, each with the reason it gives.All 6Broader topic 1Related 4Compared with 1GeocentrismRelated: The fixed-star sphere supplied the outer boundary of many geocentric cosmologies.AvicennismRelated: Avicenna connects the heavens’ ordered motions to the hierarchy of separate intellects.Jean BuridanRelated: Buridan proposed that God imparted impetus to the heavens at creation.Fire (classical element)Related: Aristotle distinguished the heavens from elemental fire in the sublunary world.