The Illuminis Galaxy is the galaxy from which the Irihil come. It is in the Viperius Galaxy System of Emenata, around 1.1 million lightyears from Viperius itself.
The Irihil are the only advanced civilisation to live here.
The Irihil homeworld, Iris, is the most notable planet in Illuminis.
The galaxy is surrounded by a very large number of dark nebulae.