Question

Why do astronomers from geocentric model to the heliocentric model?

Answer 1

Early scientists and philosophers like Aristotle and Ptolemy did mathematical calculations and discovered proof to help the geocentric model of the solar system. While their ideals made sense at the time, those early scientists did not have many equipment available to assist their theory. As time passed, mathematical models and calculations became more sophisticated, and inventions such as the telescope paved the way for incredible advances towards wide popularity of the more correct heliocentric version of the solar system.

Answer 2

Ptolemy develops a geocentric model that has the planets moving around the Earth. However, in order to account for retrograde motion, he put the planets on circles that move in circles. * Copernicus suggests a heliocentric model. His model has the planets moving around the Sun in circular orbits.