-
137
Ptolemy creates a star catalog.
-
Period: 1505 to 1514
Nicolaus Copernicus discovers the "Heliocentric Theory."
-
1543
Nicolaus Copernicus discovers the Earth's rotation around the Sun.
-
Galileo Galilei discoveres Europa.
-
Galileo Galilei discovers Ganymede.
-
Galileo Discovers the rings of Saturn.
-
Johannes Kepler upgrades the telescope.
-
Johannes Kepler discovers the "Three Laws of Planetary Motion."
-
Isaac Newton discovers gravity.
-
Isaac Newton invents the first reflection telescope.
-
Charles Messier discovers Lexell's Comet.
-
William Herschel discovers Uranus.
-
William Herschel discovers Titania.
-
William Herschel discovers the dwarf elliptical galaxy known as NGC 4489.
-
Charles Messier discovers C/1788 W1.
-
Caroline Herschel discovers comet 35p/Herschel-Rigollet.
-
Caroline Herschel discovers Comet C/1790 H1.
-
Annie Jump Cannon develops a system that allows for the classification of stars.
-
Albert Einstein creates the "Theory of Relativity."
-
Albert Einstein predicts gravitational lensing.
