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168
Ptomley
Ptomley proposed the Geocentric (Earth Centred) model of the Solar System. He believed that the Earth was orbited by the other celestial bodies (planets ad Sun). -
1543
Copernicus
Nicholaus Copernicus proposed the idea of the Heliocentric (Sun-Centered) model of the solar system. The planets, including Earth, all orbit the Sun (The moon still orbits the Earth). -
Galileo