Wednesday, March 25, 2009

Hipparchus


Born: 190 B.C
Died: 120 B.C

Discovered the Precession of the Equinoxes

Developed the system of stellar magnitudes

Introduced the Babylonian angular notation of 360° in a circle.

He was geocentric.


http://www.astronomy.ohio-state.edu/~pogge/Ast161/Unit3/greek.html

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