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Tag Archives: Galileo’s World
Kepler 1606
Johann Kepler, De stella nova in pede serpentarii (Prague, 1606) Kepler’s star map shows the constellations of Ophiuchus (the Serpent Handler), Sagittarius and Scorpius. The Milky Way runs diagonally down from the left, and the “ecliptic,” or annual path of … Continue reading
Vincenzo Galilei 1581
Vincenzo Galilei, Dialogo della Musica Antica et della Moderna (Florence, 1581) From childhood, Galileo’s world was shaped by music. His father, Vincenzo Galilei, was a prominent music theorist who contributed to the development of Italian opera. This book, Vincenzo’s major … Continue reading
Kepler 1596
Johann Kepler, Mysterium cosmographicum (Tübingen, 1596) By far the best known 16th-century defender of Copernicus was Johann Kepler. In this work he demonstrated that vast empty regions lying between the planetary spheres, which were required by Copernicus, were not wasted … Continue reading
Copernicus 1617
Nicolaus Copernicus, De revolutionibus orbium coelestium (Amsterdam, 1617), 3d edition In De revolutionibus, Copernicus placed the Sun in the center of the universe and set the Earth in annual motion around the Sun. This is the 3d edition, printed in … Continue reading
Copernicus 1566
Nicolaus Copernicus, De revolutionibus orbium coelestium (Basel, 1566), 2d ed. Copernicus argued that the Sun rather than the Earth lies in the center of the universe. The Earth moves as a planet around the Sun, carrying its Moon along as … Continue reading
Copernicus 1543
Nicolaus Copernicus, De revolutionibus orbium coelestium (Nuremberg, 1543) Copernicus argued that the Sun rather than the Earth lies in the center of the universe. The Earth moves as a planet around the Sun. In 1543 little proof was available that … Continue reading
Capella
Martianus Capella (fl. 450), De nuptijs philologie [et] Mercurij (Vicenza, 1499), 1st printed ed. “On the Marriage of Philology and Mercury.” Capella described the seven liberal arts. The first three are grammar, logic or dialectic, and rhetoric. Then come the … Continue reading
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Complex Armillary Sphere replica
This replica combines two armillary spheres into one, containing models for both the Sun and the Moon. The annual motion of the Sun along the “ecliptic,” its apparent path around the sky, is inclined to the Earth’s equator by 23.5°. … Continue reading
Astrolabe replica
Brian Grieg (2014) The astrolabe, one of the fundamental instruments for observational astronomy, consists of three major parts: the mater, or underlying disk; the climate, a removable disk adjusted for latitude; and the rete, a ring marked with star positions. … Continue reading
Apian 1545
Peter Apian, Cosmographia (Antwerp, 1545) In this introduction to astronomy and geography, the Moon lies embedded within a solid sphere carrying it around the Earth once a month. The solid sphere explains why the same side of the Moon always … Continue reading
