Polish astronomer who produced a model of the solar system with the sun in the center (1473-1543). This brought great anger to those who thought the earth was the center. heliocentric model
Publicized Copernicus's findings; used the telescope to study moon and planets; added discoveries concerning the laws of gravity; condemned by the Catholic church for his work.
Defined the laws of motion and gravity. Tried to explain motion of the universe.