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Sosigenes of Alexandria: Quick Facts

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Facts

Flourished c.100 BCE - 0
Subjects Of Study Julian calendar
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
How did Ptolemy explain retrograde motion?
Ptolemy
Egyptian astronomer, mathematician, and geographer
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Eudoxus of Cnidus
Greek mathematician and astronomer
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Conon of Samos
Greek mathematician
Galileo
Galileo
Italian natural philosopher, astronomer, and mathematician
Giordano Bruno
Giordano Bruno
Italian 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
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
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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Regiomontanus
German mathematician
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Kidinnu
Babylonian astronomer and mathematician

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