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.

Ptolemy was one of Alexander's most trusted companions and military officers. After the death of Alexander in 323 BC, Ptolemy retrieved his body as it was en route to be buried in Macedon, …

Sep 7, 2023 · Ptolemy was a keen astronomer, although he was reliant on the naked eye since the telescope was not invented until the early 17th century. What Ptolemy did have access to …

Ptolemy, or in Latin Claudius Ptolemaeus (ca. 90 – ca. 168 C.E.), was a mathematician, philosopher, geographer, map maker, astronomer, theologian, and astrologer who lived in …

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, …

May 23, 2024 · Claudius Ptolemy (c. 100 – c. 170 AD) was a towering figure in the ancient world, renowned for his extensive contributions to various fields of science. His life and works left an …

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. He believed the planets and sun moved around the Earth in …

Ptolemy, Latin in full Claudius Ptolemaeus (fl. AD 127-145, Alexandria), ancient astronomer, geographer, and mathematician who considered the Earth the center of the universe (the …

Aug 29, 2024 · Explore the life and legacy of Ptolemy I Soter, from his early years in Macedon and close companionship with Alexander the Great, to his strategic consolidation of power in …

Ptolemy was the most influential of Greek astronomers and geographers of his time. He propounded the geocentric theory of the solar system that prevailed for 1400 years.