The order of the solar system with regards to the geocentric model, according to Penn State University is Earth (stationary and at the center), moon, Mercury, Venus, sun, Mars, Jupiter and Saturn.
They believed that the Earth was at the center with the sky or 'heavens' rotating around it in a series of layered spheres.Īccording to the educational website Lumen Learning, Ptolemy's complicated geocentric model stated that a planet moves in a small circle (known as an epicycle), the epicycle then moves around Earth in a larger circle (known as a deferent). When gazing up at the night sky from what feels like a fixed reference point and witnessing the stars and planets dance across the sky we can understand why the ancient Greeks adopted the geocentric view of the universe.
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