Ganymede is the only known moon with its very own magnetic field, which causes auroras akin to Those people on Earth. The auroras sway when Jupiter’s magnetic field fluctuates, partial proof for a large saltwater ocean. Typically the time period moon brings to intellect a spherical object, like Earth's Moon. https://codyzcdca.oblogation.com/33854599/5-easy-facts-about-best-moons-described