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Kidinnu: Quick Facts

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Facts

Also Known As Kidin • Kidenas • Cidenas
Flourished c.379 BCE -
Subjects Of Study Babylonian calendar • System B • precession of the equinoxes
Engraving of six astronomers, with Hipparchus seated at center and, from left to right, Galileo, Johannes Hevelius, Tycho Brahe, Nicolaus Copernicus, and Ptolemy standing, each holding scientific instruments.
Hipparchus
Greek astronomer
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al-Battānī
Arab astronomer and mathematician
Nicolaus Copernicus
Nicolaus Copernicus
Polish astronomer
Galileo
Galileo
Italian natural philosopher, astronomer, and mathematician
Giordano Bruno
Giordano Bruno
Italian philosopher
Jean Le Rond d'Alembert.
Jean Le Rond d’Alembert
French mathematician and philosopher
Engraving portrait of Carl Friedrich Gauss wearing a cap and formal 19th-century clothing, with detailed shading around his face and upper body.
Carl Friedrich Gauss
German mathematician
Roger Bacon
Roger Bacon
English philosopher and educational reformer
How did Ptolemy explain retrograde motion?
Ptolemy
Egyptian astronomer, mathematician, and geographer
Edmond Halley
Edmond Halley
British scientist
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Sir William Rowan Hamilton
Irish mathematician and astronomer
Christiaan Huygens
Christiaan Huygens
Dutch scientist and mathematician
Arthur Stanley Eddington.
Arthur Eddington
British scientist
Portrait of Pierre Simon Marquis de Laplace wearing formal attire with a sash and star-shaped medal, looking slightly to his left.
Pierre-Simon, marquis de Laplace
French scientist and mathematician
John Herschel
Sir John Herschel, 1st Baronet
English astronomer
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Eudoxus of Cnidus
Greek mathematician and astronomer
Simon Newcomb, c. 1905.
Simon Newcomb
American astronomer and mathematician
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Omar Khayyam
Persian poet and astronomer
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Ibn al-Haytham
Arab astronomer and mathematician
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al-Kāshī
Persian astronomer and mathematician

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