Ganymede is the one recognized moon with its own magnetic subject, which leads to auroras akin to Individuals in the world. The auroras sway when Jupiter’s magnetic discipline fluctuates, partial proof for a big saltwater ocean. Earth’s oceans, by comparison, only extend down about eleven kilometers (less than seven miles) https://remingtonswwvu.tblogz.com/the-ultimate-guide-to-best-moons-48170374