On this series, survivors from the 12 colonies hunt for the mythical 13th colony called Earth
[DOC] [TLE] Cylon History - Battlestar Wiki [PAR] Sep 1, 2013 ... Part of the series on ... An ancient Cylon Centurion discovered on Earth, 2,000 
years after its ... the colonization of the Thirteenth Colony, Earth's mechanical 
Cylons ...