Chapter Text
Escape from the Dark and Into the Black
Prologue
Five hundred years after Harry Potter defeated the Dark Lord, his name lived on in legend and fables. Earth-That-Was was barely remembered among the Muggles that had ventured into space seeking refuge from a dying planet. The magical community that had joined the exodus, however, passed the oral traditions of the Boy-Who-Lived who defeated one of the most powerful Dark Lords of all time. His sacrifice led to 100 years of peace and prosperity. Numerous books were written of his exploits. His companions' names also became larger than life. Hermione Granger, Ron Weasley, Albus Dumbledore – Severus Snape. It was too bad that another Dark Lord had come along and Harry Potter was not there to defeat him. Wizard-kind had made his name so legendary that they believed he would come back from the dead whenever his world needed him. But that sword was never pulled from the stone. The violent and brutal war had depleted the planet of its magic and therefore ending up destroying the earth's eco-systems and the resources that were dependent on magic for their vitality.
Early on, the government of China, one of the two great powers, wanted to destroy all Wizards and Witches once they learned of the reason for the impending death of the Earth. They feared their power. The Americans, the other major power, still held on to their beliefs that "All Men Were Created Equal." They argued that credo included Wizards even though privately they also wished Wizard-kind did not exist so they happily agreed to a compromise which planned to set Wizards on their very own planet in the outer rings of the new solar system, far away from the Central Planets. They were left under strict governing rules that they were not to ever go off planet. The Alliance, as the combined powers were known, left them with little to no resources on a barely terra-formed planet and said they could use their magic to make their way. The Wizarding community, decimated after years of war and a declining access to their magic, accepted this decision. There were not enough magic users left to defeat the hordes of Muggles that now existed. In exchange for being allowed to live and move off planet, regardless of the restrictions, the Wizarding community used what little magic they had left to ensure that the fleet of ships successfully made the journey.
Along with Wizards and Witches, small groups of other magical creatures were allowed to join the exodus as well. Many chose to die with the Earth as their magic was too tied to it. Fairies, unicorns, thestrals, and centaurs did not make the journey. The few giants left were denied transportation due to their sheer size. They took too much in the way of precious resources.
Crups, kneazles, phoenixes, owls, elves, and goblins did make the trip. A few vampires managed it as well, but they generally remained in secure seclusion aware that the Muggles would never accept them. Families were not allowed to bring much other than what they needed to survive, but they made a pact to try to bring at least a few pieces of cultural relics in order to retain their cultural history. "Hogwarts: A History" was one of the relics that survived.
The goblins reestablished a "Gringott's" branch, but so few families had anything worth storing in the vaults, they were almost empty. Along with important goblin-made artifacts, including the famous Sword of Gryffindor used by Harry Potter used to kill Voldemort, the Goblins also preserved as much as they could of several key vaults of Wizarding Leaders.
Shortly after their arrival, exposure to bacteria not recognized by the immune systems of the many settlers took many lives. Goblins were the hardest hit. If the population had been small to begin with, it was devastated now. Those that remained focused on surviving. The goblins returned to working metal as that was far more valuable skill on the desolate planet they lived on than any banking services. The vaults were long lost to memory except by a Goblin of each generation tasked with being the sole holder of the vault keys and keeper of the traditions.
After this devastation, the Alliance lost interest in keeping track of the denizens of this magical community since they were no longer perceived as a threat, and, outside of rumor and myth within the Alliance walls, were forgotten about. The 'verse moved on.