Why did aristarchus believe in the heliocentric model?

Copernicus Says Earth Orbits the Sun In other words, he said the Solar System is heliocentric. Until Copernicus published his work, people thought we lived in a geocentric Solar System – i.e. Earth was at the center of everything. They believed the moon, the planets, the sun, and the stars orbited the earth.Click to see full answer. Simply so, why did aristarchus believe in the heliocentric theory?The heliocentric theory was revived by Copernicus, after which Johannes Kepler described planetary motions with greater accuracy with his three laws. After realizing that the sun was much larger than the earth and the other planets, Aristarchus concluded that planets revolved around the sun.Subsequently, question is, what did Aristarchus discover? Aristarchus, the famous ancient astronomer and mathematician born in Samos: Aristarchus (310 BC-230 BC) was a famous Greek mathematician and astronomer, popular for his theories regarding the heliocentrism of our solar system. He was the first to say that the Sun, and not the Earth, was the center of our universe. Additionally, when did aristarchus propose the heliocentric model? Interestingly whilst most classical models were variations on geocentric models, one of the Pythagoreans, Aristarchus of Samos (c. 310 – 230 BC) proposed a model that placed the Sun at the centre, that is a heliocentric Universe. His model would be familiar to us today as a reasonable description of the solar system.Is the heliocentric model correct?The simplest explanation tends to be correct. If you look closely you’ll see his model correctly assumed the moon is orbiting around us. Notice how this explains the strange wandering motion of planets when observed from telescopes based on Earth.