Galileo was born on February 15, 1564.
Birthname: Galileo di Vincenzo Bonaiuti de' Galilei.
Birth Place: Pisa, Italy.
Galileo has been called the "father of modern observational astronomy", the "father of modern physics", the "father of science", and "the Father of Modern Science".
Galileo was a proponent of the heliocentric theory of the universe.
Galileo Galilei built his first telescope in 1609.
Galileo Galilei published his first astronomical observations in 1610. The collection was called Sidereus Nuncius (Starry Messenger).
He was the first person to report finding craters on the Moon, using one of his telescopes.
Io, Europa, Ganymede and Callisto - the four largest satellites of Jupiter - were named the Galilean moons in his honour.
Galileo found that the Milky Way was actually close-packed stars rather than some sort of nebula.
Galileo died on January 8, 1642 at the age of 77.
