Polish astronomer Nicolaus Copernicus was born on this day in 1473. He revolutionized astronomy with the publication of his book
De revolutionibus orbium coelestium (
On the Revolutions of the Heavenly Spheres) in 1543. In it, he formally proposed the heliocentric model of the solar system, stating that planets revolved around the sun, not Earth.
Here are a couple of coins commemorating his legacy. If you have any, please share!
Poland 10 Zlotys 1959

Germany 5 Deutsche Mark 1973: 500th Anniversary of Copernicus' Birth
