Cloud 9, is a massive, FTL-capable luxury liner within the Fleet. The ship is unique in that as well as traditional living and working space on board, Cloud 9 incorporates a huge pressurized bio-dome that provides a realistic simulation of a planetary surface, including gardens, buildings, trees - even an artificial sky. President Laura Roslin's rebuilt Quorum of Twelve met here. It is ultimately destroyed by Gina in an act of nuclear terrorism when Baltar is elected president.