retrograde

McGill Physics Hackathon (2017): demonstrate retrograde planetary motion using matplotlib

We wanted to demonstrate the type of planetary motion that would have been recorded by Copernicus during the times when heliocentrism was not widely accepted. 10 years' worth of the planets' trajectories in our solar system are mapped around the celestial sphere surrounding earth with a static stellar background. The apparent magnitude is shown by the size of the stars, and constellations may be seen.