-
The greek astronomer Aristarchus of Samos suggested that the Earth revolved around the sun.
-
Ptolemy suggested a geocentri astronomic model. According to him, the Sun, the Moon and the five knows planets (Mercury, Venus, Mars, Jupiter, and saturn) all revolved around the Earth.
-
The greek astronomer Hiparchus classified the stars according to their apparent brightness.
-
copernicus published his heliocentric model accordng to wich the planets revolved around the Sun.
-
Tyco Brahe carried out very detailed observation of the planets. Kepler deduced his famous planetary laws following Brahes observation.
-
Galileo used a telescope for the first time to observe the night sky. This was the birth of modern astronomy.
