An Italian philosopher, mathematician, physicist, and astronomer who played a central part in the Scientific Revolution. He disproved the Aristotelian theory that the rate at which an object falls is dependent on its weight by dropping two objects of different mass and the same surface area from the Leaning Tower of Pisa. He created the Law of Uniformly Accelerated Motion and his telescope revealed mountains on the moon, phases of Venus, and moons around Jupiter. He supported Copernicus’s beliefs and published Dialogue Concerning the Two Chief World Systems in 1632. Galileo was placed under house arrest by the Roman Catholic Church for his views.