Orbital Resonance

… exhibits the most perfect example of orbital resonance we have ever encountered. Each planet exerts a periodic gravitational force on its neighbor when they are at their nearest points, creating a catapult effect and mutually dependent momentum. The unusual stability of these interactions results in highly coordinated orbits. The system offers an excellent opportunity to study the way planetary gravity accelerates the motion of passing objects, with possible applications to ship maneuvering.

The command below will trigger the "Orbital Resonance" event in Stellaris:

When this event fires, you can choose between the following option:

• Interesting.
  • Physics: +None to None
  • Add deposit: +4
  • Start special project: Gravity Assist Studies