Orville Vandershmoot
The first person to promote the idea of the Heliocentric theory was Philolaus, a Pythagorean philosopher. The first "scientist" was Nicolaus Copernicus. He used his teacher's, Tycho Brahe precise measurements to help formulate how the stars moved in the sky and found that the sun moved much faster relative to everything else. He then explained away the movement by applying the Sun as the center of our solar system.
Nicolaus Copernicus
The Greek philosopher Aristarchus of Samos is credited with first questioning the geocentric theory in the 3rd century BC. He proposed a heliocentric model in which the Earth and other planets revolve around the Sun.
Aristotle was the first to develop a geocentric theory. But it is generally accepted that the Greek astronomer Ptolemy provided the most elaborated model of the geocentric view of the universe in which the Earth was the center. This idea lasted for centuries until the time of Copernicus.
Nicolaus Copernicus < NOVA NET ANSWER
Nicolaus Copernicus < NOVA NET ANSWER
Nicolaus Copernicus < NOVA NET ANSWER
Nicolaus Copernicus < NOVA NET ANSWER
The geocentric Solar system theory was first proposed by ancient Greek philosopher Aristotle and further developed by astronomer Claudius Ptolemy. This theory placed Earth at the center of the universe with all celestial bodies, including the Sun, planets, and stars, orbiting around it.
Albert Einstein
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Geocentric theory was the first explanation of the solar system that completely explained and predicted the apparent motions of the planets. The church also embraced this theory and defended it against the heliocentric theory.