Galileo Galilei was an Italian philosopher, mathematician and astronomer born on February 15, 1564. In 1581 Galileo attended the university of Pisa, where he was supposed to study medicine. However, he had a passion for mathematics and went thru that path. What brought him to the science of astronomy was that he heard about the invention of an artefact that made possible to see things far away as if there where nearby. Today he is going to give a lecture in astronomy. Therefore, I am going to talk about some of his most significant contributions to astronomy before he begins. In the year 1609 Galileo made some significant improvements to the telescope. Galileo learned about the spyglass and started to use it to make a telescope of his own.
