galileo galilei
Galileo Galilei (1564 – 1642) was the physicist, philosopher, astronomer and mathematician responsible for introducing the scientific method, also known by his name: the Galileian method. He made important contributions to dynamics, with the principle of inertia and the law of falling bodies, and to astronomy, including use of the telescope and the discovery of the rotation of the Earth, of sunspots, of the mountains on the Moon, of the satellites of Jupiter, and of the stars in the Milky Way.