The Hyperions, Book One. The Hyperions, #1

The royal command ship Calpernia leads the Hyperion fleet deeper into a mysterious space sector. Although the ships carry hundreds of thousands of men, women, and children, they represent only a small portion of the once great Hyperion empire. They are the survivors; refugees from a doomed planet ravaged, and ultimately destroyed, by internal strife. Hyperion, in the grips of civil war, had exploded into lifeless fragments hurtling in all directions, allowing scant time or resources for all but a fraction of their race to escape through a wormhole and join the Calpernia in orbit around Earth's moon.
Under the leadership of their new king, Kevian, the surviving Hyperions constructed a fleet of massive starships that now serve as their temporary home until a habitable planet can be found and declared New Hyperion. But like all quests, the Grail remains elusive. From the pages of the Vampires Vs. Aliens Young Adult Science Fiction series!