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Sep 14, 2024 · Ptolemy credited Hipparchus (mid-2nd century bce) with essential elements of his solar theory, as well as parts of his lunar theory, while denying that Hipparchus constructed planetary models.
Sep 23, 2024 · Hippocrates, ancient Greek physician who lived during Greece’s Classical period and is traditionally regarded as the father of medicine. He has been revered for his ethical standards in medical practice, mainly for the Hippocratic Oath, which, it is suspected, he did not write.
Sep 12, 2024 · The Almagest is divided into 13 books. Book 1 gives arguments for a geocentric spherical cosmos and introduces the necessary trigonometry, along with a trigonometry table, that allowed Ptolemy in subsequent books to explain and predict the motions of the Sun, Moon, planets, and stars.
Sep 30, 2024 · Hevelius also included one illustration of the Moon in his book, a close-up view of lunar crater, Hipparchus, based on his observations with a 30-foot refractor telescope. It was the first detailed illustration of a specific lunar feature.
2 days ago · Heliocentrism[ a ] (also known as the heliocentric model) is a superseded astronomical model in which the Earth and planets revolve around the Sun at the centre of the universe. Historically, heliocentrism was opposed to geocentrism, which placed the Earth at the centre.
2 days ago · Ptolemy, quoting Hipparchus, also references Archimedes' solstice observations in the Almagest. This would make Archimedes the first known Greek to have recorded multiple solstice dates and times in successive years.
5 days ago · Greek astronomer Hipparchus of Nicaea (c.190 – c. 120 BCE) also rejected Aristotelian physics and followed Strato in adopting some form of theory of impetus to explain motion.
Oct 2, 2024 · The brightness of comets is measured on the same scale we use for stars, one that has been in use since roughly 150 B.C., when it was devised by the ancient scholar Hipparchus and refined by the astronomer Ptolemy.
Sep 23, 2024 · Prehistoric peoples may have created the world’s oldest lunisolar calendar thousands of years ago to mark a calamitous comet strike, according to a new study. That conclusion is based on a new interpretation of carvings on stone pillars at the 12,000-year-old site of Göbekli Tepe in Türkiye.
Sep 21, 2024 · The ancient Greeks also observed and studied equinoxes, with the mathematician and astronomer Hipparchus making important contributions to understanding these events. As civilizations developed and advanced, so did their understanding and calculation of equinoxes.
