1 Galileo Galilei(Known as âFatherâ of Observational Astronomy who Invented the âThermoscopeâ and Various Military Compasses)
An Italian astronomer, engineer, and physicist, Galileo Galilei is widely regarded as the father of observational astronomy, the father of the scientific method, the father of modern physics, and the father of modern science. He is credited with popularizing the telescope, which changed the course of history.