The Italian astronomer Galileo di Vincenzo Bonaiuti de' Galilei was born in 1564. He is more commonly called Galileo, a scientist, engineer, and physicist. He hails from Pisa, which was then part of the Duchy of Florence. As a professor of mathematics at the University of Pisa, Galileo dropped two steel balls simultaneously from the top of Pisa's famous Leaning Tower. Here are 10 quiz questions based on Galileo Galilei. Let's Play the quiz!