This is a three-dimensional (sort of?) project, well, specifically, it's in orthographic projection, which basically means that things don't appear smaller or larger based on the distance it is from the camera. Left and right arrow keys "rotate" the whole system and the up and down arrow keys change the simulation speed in seconds/earth year. (s/yr). Here I've included 10 things: The sun, Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto. Oh, and if you've been wondering why I almost always include Pluto in my projects, it's complicated, but even if it might not technically be a planet according to one influential source, the IAU, there are still other definitions. Even if Pluto objectively isn't a planet (which isn't really the case), it is still the 9th largest object directly orbiting the Sun in terms of diameter, and it is totally still a relatively significant part of our Solar System. The sizes of these objects are not accurate, nor the distances, but the speeds are. You have to sacrifice that 95% of the time when modeling the solar system, especially when fitting it in a small window.