After Alexander the Great's death, his empire splintered. The Diadochi — his powerful generals — turned on one another in a ...

That’s part of what makes The Last Days of Ptolemy Grey so remarkable. Walter Mosley’s heartfelt and gorgeous saga about dementia doesn’t center around man defined by strength. Instead ...

Ptolemy's Meteoroscope was a tool to calculate heights and distances, often in relation to celestial bodies. It is referenced in several ancient texts, including Ptolemy's own book on mapmaking ...

Researchers have deciphered an ancient manuscript that they think Claudius Ptolemy, an Egyptian mathematician and astronomer of Greek descent, penned during the first century A.D. Written in Greek ...

Now researchers have managed to recover the text written by Ptolemy on a parchment that suffered such a previous recovery attempt. Outermost six rings of the meteoroscope, not to scale.

The material they discovered appears to be a copy of Claudius Ptolemy’s treatise on a scientific instrument called the meteoroscope. Ptolemy, who was born in 100 CE, was a renowned astronomer ...

The first great attempt to make mapping realistic came in the second century A.D. with Claudius Ptolemy. He was an astronomer and astrologer obsessed with making accurate horoscopes, which ...

By Megan Conway In 1952, the German-French artist Jean Arp made several trips to Greece, where he encountered the ideas of Claudius Ptolemy, the Greco-Roman astronomer, mathematician and ...