Galileo Demonstrates Telescope

Date: August 25, 1609 • Location: Rome, Italy

Italian astronomer Galileo Galilei (pictured) demonstrated his first telescope to Venetian lawmakers.

Galileo di Vincenzo Bonaiuti de' Galilei, commonly referred to as Galileo Galilei or mononymously as Galileo, was an Italian astronomer, physicist, engineer and polymath. He was born in Pisa, then part of the Duchy of Florence. Galileo has been called the father of observational astronomy, classical physics, the scientific method, and modern science.