Battlestar Galactica is set in a distant star system, where a civilization of humans live on a group of planets known as the Twelve Colonies. In the past, the Colonies had been at war with a cybernetic race of their own creation, known as the Cylons. With the unwitting help of a human scientist named Gaius Baltar, the Cylons launch a sudden sneak attack on the Colonies, laying waste to the planets and devastating their populations. Out of a population numbering in the billions, only approximately 50,000 humans survive, most of whom were aboard civilian ships that avoided destruction. Of all the Colonial Fleet, the eponymous Battlestar Galactica appears to be the only military capital ship that survived the attack. Under the leadership of Colonial Fleet officer Commander William "Bill" Adama and President Laura Roslin, the Galactica and its crew take up the task of leading the small fugitive fleet of survivors into space in search of a fabled refuge known as Earth.
The Aerilonian idea of self-reliance without a central government is strongly adhered to. As a result, the Aerilon Parliament and the Prime Minister have publicly stated that the government will not attempt the funding of health care, schools, or anything that could be relied upon by the people, unlike the government of Picon. The Aerilonian people have granted the police remarkably broad powers to detain, imprison, and even torture people on even the slightest pretext. The people are very much into spending time outdoors, and value plain speech, hard work, and trust in one's neighbor above everything else, except for the worship of the gods. Like Picons, Aerilonians enjoy a good fight and a pint, or two. Paintings are suspect unless they are of family members, heroic men, or cattle. Primary colors are recommended, sculpture is also suspect, unless it is made by hand, out of wood, with a pocket knife, and results in a pointed weapon. Artists who desire to become famous will find themselves leaving Aerilon for another colony, such as Caprica, Leonis or Virgon to do so. Agriculture is the foundation of the planetary economy. Doctor Gaius Baltar, a native of Aerilon, described his homeworld as "a drab, ugly rock, condemned to be the food basket of the Twelve Worlds."