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Hipparchus was born in Nicaea ( Greek: Νίκαια ), in Bithynia. The exact dates of his life are not known, but Ptolemy attributes astronomical observations to him in the period from 147 to 127 BC, and some of these are stated as made in Rhodes; earlier observations since 162 BC might also have been made by him.
Hipparchus, Greek astronomer and mathematician who made fundamental contributions to the advancement of astronomy as a mathematical science and to the foundations of trigonometry. Although he is commonly ranked among the greatest scientists of antiquity, very little is known about his life.
Mar 15, 2022 · Hipparchus of Nicea (l. c. 190 - c. 120 BCE) was a Greek astronomer, geographer, and mathematician regarded as the greatest astronomer of antiquity and one of the greatest of all time. He is best known...
Aug 26, 2016 · A Greek mathematician and astronomer, he measured the earth-moon distance accurately, founded the mathematical discipline of trigonometry, and his combinatorics work was unequalled until 1870. Hipparchus discovered the precession of the equinoxes and observed the appearance of a new star – a nova.
Hipparchus, or Hipparchos, (born, Nicaea, Bithynia—died after 127 bc, Rhodes?), Greek astronomer and mathematician. He discovered the precession of the equinoxes ( see equinoxes, precession of the), calculated the length of the year to within 6.5 minutes, compiled the first known star catalog, and made an early formulation of trigonometry .
Reasonably enough Hipparchus is often referred to as Hipparchus of Nicaea or Hipparchus of Bithynia and he is listed among the famous men of Bithynia by Strabo, the Greek geographer and historian who lived from about 64 BC to about 24 AD.
May 29, 2018 · The Greek astronomer Hipparchus (active 162-126 B.C.) discovered the precession of the equinoxes, founded trigonometry, and compiled the first star catalog. Born at Nicaea in Bithynia, Hipparchus studied astronomy, perhaps under Theodosius, and made some of his early observations in his native city.
Hipparchus and his predecessors used simple instruments, such as the gnomon, the astrolabe, and the armillary sphere for astronomical calculations and observations. Hipparchus is credited with the invention or improvement of several astronomical instruments, which were used for a long time for naked-eye observations.
Hipparchus was able to become the very first astronomer to actually craft completely accurate models detailing the motion of the moon and the sun. Not all of his models survived to the modern day so he may have made numerous other discoveries that have become lost to history.
Dec 8, 2022 · Newly discovered fragments of 2,200-year-old star coordinates—once thought lost—reveal the incredible skill of the ancient astronomer Hipparchus.
