Sublunary sphere
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In Aristotelian physics and Greek astronomy, the sublunary sphere is the region of the geocentric cosmos below the Moon, consisting of the four classical elements: earth, water, air, and fire.
The seven heavens and the sublunar spheres, from an engraving of Albertus Magnus' Philosophia naturalis
Geocentrism
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Geocentrism is a superseded astronomical model description of the Universe with Earth at the center. It is also known as the geocentric model, often exemplified specifically by the Ptolemaic system. U
Sublunary sphere
…In Aristotelian physics and Greek astronomy, the sublunary sphere is the region of the geocentric cosmos below the Moon, consisting of the four classical elements: earth, water, air, and fire. The sublunary sphere was the realm of changing nature…
Figure of the heavenly bodies – An illustration of a Ptolemaic geocentric system by Portuguese cosmographer and cartographer Bartolomeu Velho, 1568 (Bibliothèque Nationale, Paris)
Pages from 1550 Annotazione on Sacrobosco's De sphaera mundi, showing the Ptolemaic system.