Theory That Put The World To Rights
![The Copernican Planisphere, illustrated in 1661 by the cartographer Andreas Cellarius](https://www.onthisday.com/images/articles/copernican-planisphere.jpg)
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Famous Birthdays
Nicolaus Copernicus (1473-1543)
Polish mathematician and astronomer who theorized that planets revolve around the sun (Heliocentric theory), born in Toruń, Royal Prussia, Kingdom of Poland
1473 Highlights
About February 19, 1473
Calendar: Julian
Day of the Week: Friday
How Long Ago? 551 years, 4 months and 21 days
Leap Year: No
Star Sign: Pisces