This is a great video on why planetary orbits tend to sync up: https://www.youtube.com/watch?v=Qyn64b4LNJ0 https://www.youtube.com/watch?v=Qyn64b4LNJ0. Ultimate

This is a great video on why planetary orbits tend to sync up: https://www.youtube.com/watch?v=Qyn64b4LNJ0 https://www.youtube.com/watch?v=Qyn64b4LNJ0. Ultimately, it comes down to the concept of entrainment (the same reason metronomes on the same surface tend to sync up).