Gliese 876 is a red dwarf only 15 light years from Earth in the constellation Aquarius. The orbits of the outer three planets are locked in a Laplace reasonance. This resonance is also present in the moons of Jupiter: Io, Europa, Ganymede. This strong dynamical interaction leads to interesting conclusions about the formation history of the system. It is a very strong indication that the planets migrated in the protoplanetary disk to their current position and got locked into mean motion resonances during that process. Link to scientific paper Your name Note: Your commit will be vetted before it is merged into the public version. It is crucial that you include a link to a scientific publication. For more information on the meaning of the different datafields see the readme file in the Open Exoplanet Catalogue repository on github.