jan 1, 1510 - Copernicus's Discovery
Description:
Mathematician and astronomer Nicolaus Copernicus (1473–1543) argued that the sun was fixed at the centre of the cosmos and that the earth circled around it. He proposed the heliocentric theory, and challenged the geocentric theory.Added to timeline:
Date:
jan 1, 1510
Now
~ 515 years ago