The Battlestar Galactica is a space battleship in the original and re-imagined science fiction television series Battlestar Galactica.
The Twelve Colonies of Man in the original television series built a number of Battlestars during their thousand-year war with the Cylons, whose battleships are known as Basestars.
One of an undisclosed total number of Battlestar constructed by the Twelve Colonies of Man, Galactica represents the Colonial planet Caprica, and is crewed mostly by Capricans. Galactica was launched more than 500 yahren before the close of the Thousand Yahren War (and the start of the television series). It is believed to be the only Battlestar to survive the destruction of the Twelve Colonies, until Battlestar Pegasus is found. Galactica is commanded by Commander Adama.
In the pre-Holocaust Colonial Service, battlestars like the Galactica operated as the flagships of numbered naval fleets (e.g. the Fourth Fleet), with each fleet assigned one battlestar and led by that battlestar's commander. A typical fleet comprised 600 fighting ships, and operated independently from other fleets. Since the Holocaust, the Galactica is the military's sole capital ship of any kind (except, briefly, for the Pegasus).
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