Ganymede is the only real known moon with its personal magnetic field, which triggers auroras akin to People in the world. The auroras sway when Jupiter’s magnetic field fluctuates, partial proof for a significant saltwater ocean. Earth’s oceans, by comparison, only stretch down about 11 kilometers (fewer than seven miles) https://best-moons83715.blogocial.com/the-smart-trick-of-bestmoons-that-nobody-is-discussing-70450445