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Ptolemy proposes the Geocentric Model/Theory
Ptolemy created the geocentric model after Aristotle made his. He wanted to explain how the planets moved in his own way since there was still many questions Aristotle's model couldn't. -
May 24, 1543
Nicolaus Copernicus publishes On The Revolutions of Heavenly Spheres
On The Revolutions of Heavenly Spheres is a book who Nicolaus Copernicus wrote when he was studying about the planets. It was about the heliocentric theory that he created. -
Galileo's experiment at the Leaning Tower of Pisa
Galileo made an experiment of the Leaning Tower of Pisa, he went to the top of the tower and did that experiment. -
Johannes Kepler published his Laws of Planetary Motion
Johannes Kepler made a system of 3 laws not about where the planets were but about how they moved and orbited.
