Born in Pisa, Italy, father was a music teacher and a famous musician
Went to the University of Pisa to study medicine in 1581
Became interested in physics and mathematics
Observed a lamp hanging from the ceiling in the cathedral, noticed it took the same amount of time to swing back and forth
Left the university and got a job as a teacher, began to experiment with pendulums, levers, balls, and other objects
Wanted to test principles and see if he could observe them in the real world, laid the foundation for the scientific method
Tested the idea that heavier items would land first, proved they landed at the same time
Moved from Pisa to the University of Padua, where he was permitted to experiment and discuss new ideas
Studied Copernicus' work and felt his observations of the planets supported the view that the Sun was the centre
Built his own telescope, made many discoveries including the four large moons around Jupiter and the phases of the planet Venus
Wrote a book called the Dialogue Concerning the Two Chief World Systems, describing why he thought the Earth orbited the Sun
Sentenced to life in prison by the Catholic Church, later allowed to live at his home in Tuscany under house arrest for years
Continued to write while under house arrest, became blind, died on January 8, 1642