15 13, Heliocentrism was put forward by Copernicus at the age of 40. However, it is generally believed that the complete Heliocentrism model of the universe was put forward by Copernicus in On the Operation of Celestial Bodies published before his death in 1543.

Mikolaj Copernic (1473— 1543) was a Polish astronomer, mathematician, doctor of canon law and priest during the Renaissance.