-
-
publishes his heliocentric theory of the universe
-
disc. a supernova
-
uses telescope. discovers 4 jovian moons, the moon's craters, and the milky way galaxy
-
1st and 2nd laws of planetary motions published
-
3rd law of planetary motion published
-
found by cassani
-
builds 1st reflecting telescope
-
theory of gravitation
-
discovers galaxies, nebula, and star clusters while looking for comets
-
discovers the 1st asteriod
-
the great red spot on jupiter becomes prominent
-
introduce H-R program
-