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A volvelle from a sixteenth-century edition of Sacrobosco's De Sphaera. De sphaera mundi (Latin title meaning On the Sphere of the World, sometimes rendered The Sphere of the Cosmos; the Latin title is also given as Tractatus de sphaera, Textus de sphaera, or simply De sphaera) is a medieval introduction to the basic elements of astronomy written by Johannes de Sacrobosco (John of Holywood) c ...
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The Paradiso assumes the medieval view of the Universe, with the Earth surrounded by concentric spheres containing planets and stars. Dante and Beatrice speak to the teachers of wisdom Thomas Aquinas, Albertus Magnus, Peter Lombard and Sigier of Brabant in the Sphere of the Sun (fresco by Philipp Veit), Canto 10.
The centre of the Earth is the centre of the lunar sphere—the orbit of the Moon around the Earth. All the spheres rotate around the Sun, which is near the centre of the Universe. The distance between the Earth and the Sun is an insignificant fraction of the distance from the Earth and the Sun to the stars, so parallax is not observed in the ...
As Riccioli explained it, whether the Sun went round the Earth or the Earth round the Sun, three movements were necessary to explain the movement of sunspots. If the Earth moves around the Sun, the necessary movements were the annual motion of the Earth, the diurnal motion of the Earth, and the rotation of the Sun. However, if the Sun moved ...
Venetian literature is the corpus of literature in Venetian, the vernacular language of the region roughly corresponding to Venice, from the 12th century.Venetian literature, after an initial period of splendour in the sixteenth century with the success of artists such as Ruzante, reached its zenith in the eighteenth century, thanks to its greatest exponent, dramatist Carlo Goldoni.