Cylon homeworld

The Cylon homeworld is the planet which the Cylons established as their main base after rebelling against the Twelve Colonies. The Cylons presumably leave for this world after the armistice that ended the Cylon War (Miniseries).

The Colonials estimate the general location of the Cylon homeworld, by using the Armistice Station as a reference. The station was apparently built at the Armistice Line which the Colonials agreed to never cross, and behind which the Cylons would settle (The Hand of God).

The escaping Fleet and the Twelve Colonies are too far away from the Cylon homeworld for Humanoid Cylons or Raiders to resurrect. As a result, the Cylons built several Resurrection Ships, which would serve as safety nets for Cylons located outside of downloading range during and after the attack.

Notes

When Ron D. Moore was questioned why the "Cylon POV episode", "Downloaded", took place on Cylon-occupied Caprica instead of the Cylon homeworld in an interview with Now Playing Magazine on February 23, 2006, he stated that the series will probably not show that planet any time in the forseeable future, explaining that:

"That episode ("Downloaded") will not have that, and we still don’t have any plans to do that...My instinct is kind of not to go there. I feel like I don’t have a great clear vision of it; at this point if we tried to do something there it would look very familiar and not as interesting as it is in your imagination."

Moore goes on to say that he felt it was more exciting when left to the imagination, because "It still has to be a place where bipedal creatures can walk around and do things": Presumably, it has to be able to support the humanoid Cylons, who are near-human enough that their home environment would be fairly similar to a human one, and not drastically exotic.