Nicholas Copernicus
By Brandon Hailey
Nicholas Copernicus was a Astronomer.
He is best known as the first astronomer to posit the idea of a heliocentric solar system in the fifteenth century.
Time period
By 1514 copernicus became convinced in the theory of a helicentric solar system he began to share his notes with his friends.
Contributions
He changed the astronomically way of thinking. It went against the theory that the earth was a stationary sphere.