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How did Copernicus’s Sun-centered model challenge Aristotelian physics?

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A diagram of a cylindrical vessel containing gas, with a movable piston held down by a weight. Countless small dots beneath the piston represent gas particles in rapid, random motion, illustrating Bernoulli's model of gas pressure. — physics As conceived by Daniel Bernoulli in *Hydrodynamica* (1738), gases consist of numerous particles in rapid random motion. He assumed that the pressure of a gas is produced by the direct impact of the particles on the walls of the container.

Nicolaus Copernicus’s Sun-centered model fundamentally challenged Aristotelian physics by removing Earth from the center of the cosmos, a move that rendered the traditional Aristotelian doctrine of natural motion and place untenable.1

Aristotelian physics relied on the premise that the universe was divided into two distinct realms:
* Terrestrial: Characterized by rectilinear motion, where heavy bodies naturally seek the center of the universe (Earth).23
* Celestial: Characterized by uniform circular motion, which was considered the natural state for heavenly bodies.2

By proposing that Earth itself moves in a circular orbit around the Sun, Copernicus contradicted the Aristotelian view that Earth was fixed at the center. This created significant physical problems for his contemporaries: if Earth were in motion, why did objects not fly off its surface, and why did dropped objects fall straight down rather than being left behind? These questions exposed the limitations of Aristotelian mechanics, which required a continuous force to maintain motion and assumed that Earth’s fixity was essential to the order of nature. Ultimately, addressing these contradictions necessitated the development of new concepts, such as inertia and universal gravitation, which eventually replaced the Aristotelian system.1453