Seleucus of Seleucia was an ancient astronomer who defended heliocentrism, arguing that Earth orbits the Sun and rotates on ...

Pingree’s “The Teaching of the Almagest in late antiquity” (P75-96). Normally in a newspaper column such academic references are avoided (space matters), but as Ptolemy has mentioned the ...

Nor was he alone in taking such a route: works such as Ptolemy’s Almagest, fundamental for the medieval study of the heavens, seemed to inhabitants of Christian western Europe easier to understand ...

Dive into 12 transformative books recommended by Neil deGrasse Tyson, covering physics, evolution, economics, and ...

AT the meeting on Monday of the Royal Geographical Society, Dr. H. Schlichter read a paper on “Ptolemy's Geography of Eastern Equatorial Africa.” Ptolemy, as a geographer, has received very ...

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The Ptolemaic Dynasty, to which she belonged, was founded by Ptolemy I Soter, one of the four generals of Alexander the Great (Ptolemy, Cassander, Seleucus, and Antigonus). This family, of Macedonian ...

Suddenly left without his trusted caretaker, Ptolemy Grey is assigned to the care of orphaned teenager Robyn. When they learn about a treatment that will restore Ptolemy’s dementia-addled ...