Jupiter's moon Ganymede is the most important moon while in the photo voltaic system. It can be larger than World Mercury and dwarf World Pluto, and It is really about three-quarters the size of Mars. It's also the one moon known to obtain its personal magnetic field. Large-impact hypothesis. In https://stephenfiiig.timeblog.net/70490586/the-2-minute-rule-for-best-moons