23 avr. 190 av. J.-C. - Hipparchus
Description:
Greek astronomer who created the earliest known chart of 850 stars' positions, invented trigonometry, longitude, and latitude, and developed precession of equinoxes. His studies of the universe were the foundation for Ptolemy's geocentric cosmology.Ajouté au bande de temps:
Date:
23 avr. 190 av. J.-C.
Maintenaint
~ Il y a 2217 ans