Exodus

The Exodus is a moon-sized starship built by Taorike to evacuate everything from their planet Taor before it was destroyed. It is not cloaked, since there were no hostile forces for the Taorike to hide from when they left Taor, and because something so large is exceedingly difficult to cloak. However, the Exodus is rather hard to spot since it is largely covered in very light-absorptive solar panels, and will only orbit a particular star long enough to charge up its energy reserves before heading to another star. The first report of an object matching this description was made by the ancient Zeta civilization on modern-day Carribia. It became a legend that spread to other planets during the Ancient Space Age, but was considered a myth until the recent entry of Dios to the galactic scene that proved the existence of the Taorike and therefore their ship.