Nicholaus Copernicus Websites
Copernican System: http://es.rice.edu/ES/humsoc/Galileo/Things/copernican_system.html
A website that studies Copernicus's theory and explains its reception by the people.
De Revolutionibus: http://www.bj.uj.edu.pl/bjmanus/revol/titlpg_e.html
This website scanned images of Copernicus's original text.
New Advent - Nicholaus Copernicus: http://www.newadvent.org/cathen/04352b.htm
The Catholic Encyclopedia provides an in-depth and detailed biography of Copernicus's life and study.
