Galileo Galilei (1564-1642) was an Italian physicist, mathematician, astronomer, and philosopher who played a major role in the Scientific Revolution. His achievements include improvements to the telescope and consequent astronomical observations and support for Copernicanism. 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 the first modern scientists who made critical discoveries of how to think about moving bodies. He studied medicine at the University of Pisa but his real interests were always in mathematics and natural philosophy. In 1592, he was appointed as a professor of mathematics at the University of Padua. (The University of the Republic of Venice)