Galaxy Seven

Galaxy Seven was one of the satellite galaxies of Mutter's Spiral, located 290,000 light-years from Earth.

At some point in humanity's future, the tourist board renamed a number of galaxies. These included the Sculptor Dwarf galaxy, which became Galaxy Seven.

The Tenth Doctor visited the planet Arcopolis while he was travelling alone. This planet was located deep within this Galaxy Seven. (PROSE: The Eyeless) Galaeth Saith