To revist this article, visit My Profile, then View saved stories. While waiting for Reddit to load on my phone, I wondered if I could do some physics with the loading icon. Maybe you've seen it. It looks like a mini solar system with four planets (two inner planets and two outer planets). Let's model it! Video: Rhett Allain via Reddit We should start with some data. I can do a screen capture of the loading screen and then use my favorite video analysis program (Tracker Video Analysis) to get position and time data. Of course, the screen shows distance in units of pixels and that's not very useful. I don't know the actual size of this “planetary system” (or whatever it is), so I will just set the scale size to 1 outer orbital diameter unit. This is the distance across the whole orbit of one of the outer “planets."