Ptolemy I Soter (/ ˈ t ɒ l əm i /; Greek: Πτολεμαῖος Σωτήρ, Ptolemaîos Sōtḗr, "Ptolemy the Savior"; c. 367 BC – January 282 BC) was a Macedonian Greek [2] general, historian, and successor of Alexander the Great who went on to found the Ptolemaic Kingdom centered on Egypt.

Feb 12, 2025 · Ptolemy was an astronomer, mathematician, and geographer who lived during the 2nd century CE. He is known for his geocentric (Earth-centred) model of the universe.

Sep 7, 2023 · Claudius Ptolemy (c. 100 to c. 170 CE) was an Alexandrian mathematician, astronomer, and geographer. His works survived antiquity and the Middle Ages intact, and his theories, particularly on a geocentric...

Ptolemy explained and extended Hipparchus's system of epicycles and eccentric circles to explain the Earth-centered theory of the world. Ptolemy's system involved at least 80 epicycles to explain the motions of the Sun, the Moon, and the five planets known in his time.

Ptolemy I Soter (366-282 BCE) was one of the successor kings to the empire of Alexander the Great. He served not only as king of Egypt but also the founder of the Ptolemaic Dynasty, a dynasty which included the infamous Cleopatra VII. Ptolemy was a …

Ptolemy I Soter was a Macedonian general under Alexander the Great, who became satrap and eventually king of Egypt. He founded the Ptolemaic dynasty.

Ptolemy was an influential astronomer, geographer, and mathematician of the ancient world. His theories about the universe dominated scientific thought until the Middle Ages. Almost nothing is known about Ptolemy’s life.

Claudius Ptolemy wrote the Almagest, the work that defined astronomy for over 1,000 years. The Almagest included a catalogue of over a thousand stars, recording their positions, constellations, and relative brightnesses; and a mathematical model predicting the movements of the planets.

Claudius Ptolemy was a 2nd century Greek mathematician, astronomer and geographer famous for his controversial geocentric theory of the universe, which would form the basis of our...

Nov 28, 2024 · Spanning nearly three centuries from 305 BC to 30 BC, it was the last dynasty to rule Egypt before its incorporation into the Roman Empire. Founded by Ptolemy I Soter, a trusted general of Alexander the Great, the Ptolemaic Kingdom was a fusion of Greek and Egyptian cultures, leaving a lasting legacy in governance, culture, and architecture.