jan 1, 1543 - Copernicus: Heliocentric; first proposed a model replacing the stationary center of everything but the moon from the earth to the sun based on the assumption that the Universe is unbelievably large; explain Retrograde motion as the result of the earth's motion; general idea published in Latin against many authorities.
Added to timeline:
Date:
jan 1, 1543
Now
~ 482 years ago