Copernicus refers to the astronomer Nicolaus Copernicus (1473-1543) or a variety of objects named after him:

Copernicus crater on Mars

Nicolaus Copernicus University in Toruń

Copernic Inc., the company that produces Copernic Desktop Search

Copernicus crater on the Moon

Copernicus Foundation, a non-profit organization in Chicago

1322 Coppernicus, an asteroid orbiting the Sun

Kopernik Space Center, an observatory in Vestal, New York

Copernicia, a genus of 24 species of palms

Copernicus, an avant-garde musician

DFS-Kopernikus, German TV satellites of the 1990s

Nicolaus Copernicus University Polar Station

Nicolaus Copernicus Planetarium[1], Nuremberg, Germany

a dog in the movie Back to the Future Part II owned by "Doc" Brown