1. Galileo Galilei

2. - He was born in 15 of
February in 1564 in Pisa.
- He died in 8 of January
in 1642 in Florence at the
age of 78.

3. - He was and italian
physicist, mathematician,
astronomer and philosopher.
- He improved the telescope,
he invented the first law of
motion and he studied the
Copernican

4. His contributions to observational
astronomy include the telescopic
confirmation of the phases of
Venus, the discovery of the four
largest satellites of Jupiter
(named the Galilean moons in his
honour), and the observation and
analysis of sunspots.

6. http://www.youtube.com/watch?v=Rejbk1oJ2xg

7. http://www.youtube.com/watch?v=Rejbk1oJ2xg