Copernicus: Polish Cleric and Astronomer
- Short biography of the man behind the heliocentric theory.
- http://www.lucidcafe.com/library/96feb/copernicus.html

Encarta: Copernicus, Nicolaus
- Encyclopedia article provides an overview of the astronomer's early life, his education, and his revolutionary theory that the earth was not the center of the universe.
- http://encarta.msn.com/encyclopedia_761571204/Copernicus_Nicolaus.html

Starchild: Nicolaus Copernicus
- Introduces the father of modern astronomy.
- http://starchild.gsfc.nasa.gov/docs/StarChild/whos_who_level2/copernicus.html

Windows to the Universe: Nicholas Copernicus
- Three short biographies geared toward beginning, intermediate and advanced readers. Includes links to related articles.
- http://www.windows.ucar.edu/cgi-bin/tour.cgi?link=/people/ren_epoch/copernicus.html&sw=false&sn=4444&d=/people/ren_epoch&edu=high&br=graphic&cd=false&fr=f&tour=

Nicholas Copernicus
- Short biography and sketch from PBS.
- http://www.pbs.org/wnet/hawking/cosmostar/html/cstars_coper.html

Nicolaus Copernicus
- Detailed biography examines Copernicus' dissatisfaction with the Ptolemaic system of astronomy and his theory that the earth actually revolved around the sun. Also includes portrait.
- http://www.phy.bg.ac.yu/web_projects/giants/copernicus.html

The Scientists: Nicolas Copernicus.
- Short biographical article includes links to articles on related topics.
- http://www.blupete.com/Literature/Biographies/Science/Copernicus.htm