The narrative contrasts heliocentric and geocentric perspectives, demonstrating the relative nature of motion and the importance of inertial frames of reference. It also describes experiments with ...

In 1508, Nicolaus Copernicus developed a celestial model of a heliocentric planetary system that transformed the way we view the universe. This bold theory, contrary to the geocentric ...

Dallas explains the geocentric model and then the heliocentric model developed by Kepler, Copernicus and Galileo. However, the orrery does not have the correct scale. Dallas goes outside ...