mar 14, 192 BC - Greek astronomer Hipparchus of Nicea
Description:
makes the first measurement of the precession of the equinoxes, and compiles the first star catalogue (in which he proposes our modern system of apparent magnitudes). He also improves on the Solar System model of Apollonius of Perga, in which an eccentric circle carries around a smaller circle (an epicycle), which in turn carries around a planet.Added to timeline:
Date:
mar 14, 192 BC
Now
~ 2220 years ago