The Neptune-Pluto gravitational resonance is pretty neat. Wikipedia has a nice listing of other orbital resonances in the solar system: Likely gravitional: ht

The Neptune-Pluto gravitational resonance is pretty neat. Wikipedia has a nice listing of other orbital resonances in the solar system: Likely gravitional: https://en.wikipedia.org/wiki/Orbital_resonance#Mean-motion_resonances_in_the_Solar_System https://en.wikipedia.org/wiki/Orbital_resonance#Mean-motion_... Likely coincidental: https://en.wikipedia.org/wiki/Orbital_resonance#Coincidental_%27near%27_ratios_of_mean_motion https://en.wikipedia.org/wiki/Orbital_resonance#Coincidental...