http://en.wikipedia.org/wiki/Galileo_Galilei
http://galileo.rice.edu/
http://www.lucidcafe.com/library/96feb/galileo.html
_ Galileo Galilei 1/3
http://www.youtube.com/watch?v=_KY97wBTKws
_ Galileo Galilei Proven Right
http://www.youtube.com/watch?v=L55jImEhNZ0
