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Asked by: Leydis Vedrinsky
religion and spirituality astrologyWho first proposed the geocentric theory?
Furthermore, who first proposed the geocentric model?
The geocentric model of Plato could not explain the retrograde motion of the planets. Around 140 A.D. Ptolemy proposed his refined geocentric model. In the Ptolemaic universe, a planet moves in a small circle called an epicycle, and the center of the epicycle moves along a larger circle around the Earth.
Then, who believed in geocentric theory?
Ptolemy was an astronomer and mathematician. He believed that the Earth was the center of the Universe. The word for earth in Greek is geo, so we call this idea a "geocentric" theory.
Ptolemy's equant modelIn Ptolemy's geocentric model of the universe, the Sun, the Moon, and each planet orbit a stationary Earth. Ptolemy believed that the heavenly bodies' circular motions were caused by their being attached to unseen revolving solid spheres.