Galileo Galilei
was born 451 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