Justus Susterman's Portrait of Galileo Galilei, 1636

Galileo, Pisa and Those Two Famous Balls


Galileo Galilei famously faced the Inquisition for steadfastly asserting the Earth revolved around the Sun, rather than the Sun around the Earth. But before that, he is credited with the equally famous experiment at Pisa, where he dropped two heavy metal balls, of different sizes, from Pisa’s Leaning Tower. Aristotle had written the heavier metal…