Description: The Copernican Revolution refers to the replacement of the geocentric (Earth-centered) model of visualizing the Solar System with a heliocentric (Sun-centered) model. The geocentric model was the consensus in European scientific views for close to two millennia, even though some believed in a heliocentric model. This shift provided a first step in the move towards a new model for the motions of planets, moons, stars, and other celestial objects in the sky that occurred over the following centuries. The geocentric model is still used for explaining concepts related to the celestial sphere. The Copernican Revolution is named after Nicolaus Copernicus, who in the 16th century described the heliocentric model in his seminal work De revolutionibus orbium coelestium. Although it is often claimed Immanuel Kant was the first to use the term Copernican Revolution, the accuracy of this claim is debated.

Related Terms:

• Celestial Sphere
• Geocentric Model
• Heliocentric Model
• Copernican Principle

Term and definition status: This term and its definition have been approved by a research astronomer and a teacher

The OAE Multilingual Glossary is a project of the IAU Office of Astronomy for Education (OAE) in collaboration with the IAU Office of Astronomy Outreach (OAO). The terms and definitions were chosen, written and reviewed by a collective effort from the OAE, the OAE Centers and Nodes, the OAE National Astronomy Education Coordinators (NAECs) and other volunteers. You can find a full list of credits here. All glossary terms and their definitions are released under a Creative Commons CC BY-4.0 license and should be credited to "IAU OAE".