Galileo Galilei

Born: February 15, 1564, Pisa, Italy
Died: January 8, 1642, Arcetri
Discovered: Ganymede, Europa, Io, Callisto, Rings of Saturn
Known for: Analytical dynamics, Heliocentrism,
Kinematics, Observational astronomy
Books: Two New Sciences, The Assayer
Occupation of a Astronomer