Q Continuum

The Q Continuum is the extradimensional plane of existence that is home to the omnipotent race known as "the Q." The term is also used to refer collectively to the Q themselves.

The Q Continuum cannot be perceived by humanoids as it truly exists, and thus will appear as analogues from the viewers' cultures. When Selar was brought to the Q Continuum during the Q Civil War, she perceived it as the planet Tyrus III, a battlefront during the Romulan-Vulcan War. (NF short story: "'Q'uandry")