Copernicus proposed the heliocentric model, challenging Ptolemy's geocentric view, supported by observations by Brahe, Kepler, and Galileo.
Nicolaus Copernicus was the first to propose the heliocentric model of the universe, with the Sun at its center, challenging the geocentric model established by Ptolemy. His idea was further supported by precise observations made by Tycho Brahe and analyzed by Johannes Kepler and Galileo Galilei. Kepler's laws of planetary motion provided the mathematical framework for the heliocentric model.
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