7-page paper, which includes a title page, 5-pages of content, and a reference page, compare and contrast the Geocentric and Heliocentric model. The key points that you need to make sure you emphasize are; I. Solar System II. Geocentric Model - Referenced observation from a common vision - Stationary Earth III. Retrograde Motion IV. Heliocentric Model - Copernicus - Copernician Revolution V. Kepler's Law