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4 BCE
1st event
Greek astronomer Aristarchus of Samos suggested that the Earth revolved around the Sun. -
2 BCE
2nd event
The greek astronomer Hiparchus classified the stars according to their apparent brightness. -
200
3rd event
Ptolemy suggested a geocentric astronomic model. According to him , the Sun, the moon and the five known planets all, revolved the planet. -
Jan 1, 1543
4th event
Copernicus published his heliocentric model according to which the planets revolved around the Sun. -
5th event
Tyco Brahe carried out very detailed observation of the observations.Kepler deduced his famous planetary laws following Brahe's observation. -
6th event
Galileo used a telescope for the first time to observe the night sky. -
7th event
Isaac Newton invented the first telescope using mirrors instead of lenses -
8th event
W.Herschel discovered the planet Uranus -
9th event
C. Tombaugh discovered the planet Pluto -
10th event
The discovery of the first extra-solar planets