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140
Ptolemy proposes the Geocentric Model/Theory
Ptomely proposed the idea that the Universe was geocentric (earth-centered). -
1543
Nicolaus Copernicus publishes On The Revolutions of Heavenly Spheres
The book itself was published in 1543, the year of his death, and it was about how Copernicus believed that the Sun (helio-centric) was near or at the center of the Universe instead of the Earth (Earth-centered). -
Johannes Kepler published his Laws of Planetary Motion
its not really 2018