geotsentriline

Geotsentriline is a term used to describe a model of the universe in which the Earth is considered to be at the center of all celestial bodies. This model, also known as the geocentric model, posits that the Sun, Moon, planets, and stars all revolve around a stationary Earth.

The geocentric model was the dominant cosmological view for much of ancient history and the Middle Ages. Prominent proponents included ancient Greek philosophers like Aristotle and Ptolemy. Ptolemy's Almagest, written in the 2nd century CE, provided a detailed mathematical framework for the geocentric system, explaining the observed motions of celestial objects through a complex arrangement of epicycles and deferents. This model was remarkably successful in predicting planetary positions for its time.

However, as astronomical observations became more precise, the geocentric model faced increasing challenges. Phenomena such as retrograde motion, where planets appear to temporarily reverse their direction in the sky, required increasingly complex additions to the Ptolemaic system.

The development of the heliocentric model, which places the Sun at the center of the solar system, began to gain traction with Nicolaus Copernicus in the 16th century. Subsequent work by astronomers like Johannes Kepler and Galileo Galilei provided strong observational and theoretical evidence supporting the heliocentric view, eventually leading to its widespread acceptance and the decline of the geocentric model.