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Hipparchus was born in Nicaea, Bithynia, and probably died on the island of Rhodes, Greece. He is known to have been a working astronomer between 162 and 127 BC. [3] Hipparchus is considered the greatest ancient astronomical observer and, by some, the greatest overall astronomer of antiquity.
Hipparchus. Hipparchus (ca. 190 BC – ca. 120 BC) was a Greek astronomer, geographer, and mathematician of the Hellenistic period. Hipparchus was born in Nicaea (now Iznik, Turkey), and probably died on the island of Rhodes. He is known to have been a working astronomer at least from 147 BC to 127 BC.
Hipparchus (Ancient Greek: Ἵππαρχος, romanized: Hípparkhos; died 514 BC) was a member of the ruling class of Athens and one of the sons of Pisistratus. He was a tyrant of the city of Athens from 528/527 BC until his assassination by the tyrannicides Harmodius and Aristogeiton in 514 BC.
Death of the tyrant Hipparchus, by the Syriskos Painter, 475-470 BC Hippias succeeded Peisistratos as tyrant of Athens in 528/7 BC when his father died of advanced age. He was a patron of poets and craftsmen and under his rule Athens experienced a time of prosperity.
When Peisistratus died in 528/7 BC, his son Hippias took the position of Archon and became the new tyrant of Athens, with the help of his brother, Hipparchus, who acted as the minister of culture. The two continued their father's policies, but their popularity declined after Hipparchus began to abuse the power of his position.
Pisistratus died in 527 or 528 BC, and his eldest son, Hippias, succeeded him as tyrant of Athens. Hippias, along with his brother, Hipparchus, kept many of the existing laws and taxed the Athenians at no more than five percent of their income.
Hippasus, engraving by Girolamo Olgiati, 1580. Hippasus of Metapontum (/ ˈ h ɪ p ə s ə s /; Ancient Greek: Ἵππασος ὁ Μεταποντῖνος, Híppasos; c. 530 – c. 450 BC) [1] was a Greek philosopher and early follower of Pythagoras.
Hippias of Elis (/ ˈ h ɪ p i ə s /; Greek: Ἱππίας ὁ Ἠλεῖος; late 5th century BC) was a Greek sophist, and a contemporary of Socrates.With an assurance characteristic of the later sophists, he claimed to be regarded as an authority on all subjects, and lectured on poetry, grammar, history, politics, mathematics, and much else. [1]