Tri-Galactic
From Tardis Wiki, the free Doctor Who reference
The Tri-Galactic was a trio of galaxies, including Mutter's Spiral, in which the Second Great and Bountiful Human Empire was active around the 42nd century. It is unknown if the other galaxies included were Mutter's Spiral's nearest neighbours, such as Andromeda, or if they were satellite galaxies. (TV: Planet of the Ood)
