Abstract

Copernicus’ work was for long considered a turning point in astronomy; some historians even consider it a turning point in science in general. But numerous recent studies have turned this image upside-down. It was revealed that Copernicus’ work was firmly rooted in the traditional conceptual apparatus. The aim of the article is to show that Copernicus’ work, in spite of everything, does indeed represent a radical epistemological shift regarding a certain point, which can be appropriately illuminated by the analysis of the Copernicus’ introduction of the concept of Earth’s motion in astronomy. Copernicus, in contrast to the pre-Copernican tradition, finds mathematical-astronomical reasons that transcend the field of sensory perceptions to be decisive, and rejects the physical or cosmological reasons given by the traditional natural sciences, which are eventually all based on direct or indirect “evidence immediate”