14 März 192 Jahr v. Chr. - Greek astronomer Hipparchus of Nicea

Beschreibung:

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.

Zugefügt zum Band der Zeit:

Datum:

Abbildungen: