参考资料

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.

(2nd century bc).A prolific and talented Greek astronomer, Hipparchus made fundamental contributions to the advancement of astronomy as a mathematical science. He also helped to lay the foundations of trigonometry.Although he is commonly ranked among the greatest scientists of antiquity, very little is known about his life, and only one of his many writings is still in existence.

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 for his discovery of the precession of the equinoxes and contributed significantly to the field of astronomy on every level.