The order of the solar system with regards to the geocentric design, according to Penn State University is Earth (fixed and at the center), moon, Mercury, Venus, sun, Mars, Jupiter and Saturn. At the beginning of the 16th century, Nicolaus Copernicus challenged the geocentric model and proposed that the Earth and other planets revolve around the sun. More precise than the geocentric design, Copernicus heliocentric design still had its flaws.
Aristotle then came up with a more in-depth geocentric model, which was later on fine-tuned by Claudius Ptolemaeus (also known as Ptolemy) in his treatise Almagest, which was released in the 2nd century CE according to the Mathematical Association of America. The order of the solar system with regards to the geocentric design, according to Penn State University is Earth (stationary and at the center), moon, Mercury, Venus, sun, Mars, Jupiter and Saturn. (Image credit: Photos.com via Getty Images) Assumptions of the geocentric modelScientific models are used to evaluate our understanding of the laws of science by forecasting the habits of a system. At the start of the 16th century, Nicolaus Copernicus proposed and challenged the geocentric design that the Earth and other worlds revolve around the sun. More precise than the geocentric design, Copernicus heliocentric design still had its defects.