Lucy has ties to Pluto being removed as an official planet. When the planet Eris was discovered, it was first called "Xena," after Lucy's infamous character. Lucy was extremely touched by this that she called Mike Brown (the professor who made the name stick) to tell him how moved she was by the nick-naming. The planet was later named Eris, but they could not stay away from Lucy. The moon of Eris was officially named for the goddess of "being lawless," Dysnomia. The fact that "Xena" was larger than Pluto sparked debate on whether Pluto should be a planet or not. It was concluded that it was indeed not a planet.