Aether (classical element)
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According to ancient and medieval science, aether, also known as the fifth element or quintessence, is the material that fills the region of the universe beyond the terrestrial sphere. The concept of
Jakob Bernoulli, De gravitate aetheris, 1683
Sir Isaac Newton
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.
Aether (classical element)
…include æther, aither, and ether), also known as the fifth element or quintessence, is the material that fills the region of the universe beyond the terrestrial sphere. The concept of aether was used in several theories to explain several natural phenomena, such as the propagation of light and gravity. In the late…
The seven heavens and the sublunar spheres, from an engraving of Albertus Magnus' Philosophia naturalis