Galileo Galilei
was born 453 years ago
15th February 1564

Galileo Galilei formulated the basic law of falling bodies, which he verified by careful measurements. He constructed a telescope with which he studied lunar craters, and discovered four moons revolving around Jupiter.

Find out more at:
http://www-history.mcs.st-andrews.ac.uk/Mathematicians/Galileo.html