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Sublunary sphere — The sublunary sphere is a concept derived from Greek astronomy. It is the region of the cosmos from the Earth to the Moon, consisting of the four classical elements: earth, water, air, and fire. Beginning with the Moon, up to the limits of the… … Wikipedia
On the Heavens — Page one of Aristotle s On the Heavens, from an edition published in 1837 On the Heavens (Greek: Περί ουρανού, Latin: De Caelo or De Caelo et Mundo) is Aristotle s chief cosmological treatise: it contains his astronomical theory and his ideas on… … Wikipedia
Celestial spheres — Not to be confused with celestial sphere. For other uses, see Celestial (disambiguation). Geocentric celestial spheres; Peter Apian s Cosmographia (Antwerp, 1539) … Wikipedia
Spherical Earth — Medieval artistic representation of a spherical Earth with compartments representing earth, air, and water (c. 1400). The concept of a spherical Earth dates back to ancient Greek philosophy from around the 6th century BC … Wikipedia
Heliocentrism — Heliocentric redirects here. For the albums, see Heliocentric (Paul Weller album) and Heliocentric (The Ocean Collective album). Heliocentric Universe … Wikipedia
Zodiac — See also: Zodiac (disambiguation) Wheel of the zodiac: This 6th century mosaic pavement in a synagogue incorporates Greek Byzantine elements, Beit Alpha … Wikipedia
Antikythera mechanism — The Antikythera mechanism (main fragment) The Antikythera mechanism ( / … Wikipedia
Aristarchus On the Sizes and Distances — Aristarchus s 3rd century BC calculations on the relative sizes of, from left, the Sun, Earth and Moon, from a 10th century CE Greek copy On the Sizes and Distances (of the Sun and Moon) (Περὶ μεγεθῶν καὶ ἀποστημάτων [ἡλίου καὶ σελήνης]) is… … Wikipedia
Solstice — For other uses, see Solstice (disambiguation). UTC date and time of solstices and equinoxes[1] year Equinox Mar Solstice June Equinox Sept Solstice Dec day time day time day time day time 2004 20 … Wikipedia
Aristarchus of Samos — Aristarchus, or more correctly Aristarchos (Greek: Ἀρίσταρχος, Arístarchos; 310 BC – ca. 230 BC), was a Greek astronomer and mathematician, born on the island of Samos, in Greece. He presented the first known heliocentric model of the solar… … Wikipedia
