In my first Visual Python video, the orbit the Earth made around the Sun wasn't a nice neat ellipse, so I corrected the code to include a unit radial vector. This made the orbit a perfect ellipse.
On this page of the site you can watch the video online Visual Python Planetary Orbits with a duration of hours minute second in good quality, which was uploaded by the user Peter Farrell 21 September 2013, share the link with friends and acquaintances, this video has already been watched 21,573 times on youtube and it was liked by 165 viewers. Enjoy your viewing!