The Akasha Universe, usually shortened to AU, is the space in which many galaxies—including the Abzu Galaxy, and its companion galaxies—formed and exists. It is a parallel universe to our universe where advanced technologies (Science) and ancient magics (Fantasy) co-exist and intermingle.
Stories in the Akasha Universe are a mix similar in spirit to Tolkien, Harry Potter, and Star Wars stories.
The Akasha Universe was created with the Big Bang sometime before 13.8 BYA.
The Abzu Galaxy formed soon after, around 13.5 BYA.