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140
Ptolemy proposes the Geocentric Model/Theory
He made a geocentric model to explain the earth and planets. -
1542
Nicolaus Copernicus publishes "On the revolution of Heavenly Spheres
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Galileo's experiment at the Leaning Tower of Pisa
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Johannes Kepler published his Laws of Planetary Motion
Johannes Kepler published his laws about planetary motion, having found them by analyzing the astronomical observation. -
Robert Hooke discovers cells
He experimented dead cells under a microscope and discovered cells,
