Styx: planet of the Cyrannus system
Styx was a planet of the Cyrannus star system, orbiting the star Helios Delta. It was a world with a dense reducing atmosphere of carbon dioxide and sulfides, one of the uncolonised bodies in the system that was home to the Twelve Colonies of Kobol.
Styx was a planet of the Cyrannus star system, the system that held the Twelve Colonies of Kobol. It orbited the star Helios Delta and possessed a dense reducing atmosphere made up of carbon dioxide and sulfides. It never appears on screen; everything known about it comes from the official map of the system made for Caprica. (Twelve Colonies map, Caprica)
Location and environment#
Styx orbited Helios Delta, one of the stars at the heart of the Cyrannus star system. The system was home to the worlds settled by the people who had left Kobol, and Styx was counted among its planets, alongside the colonies of Aerilon, Canceron and Aquaria that shared its star. Its atmosphere was a dense reducing envelope of carbon dioxide and sulfides, conditions hostile to unprotected life. (Twelve Colonies map, Caprica)
Frequently asked questions
- What was Styx?
- Styx was a planet of the Cyrannus star system, orbiting the star Helios Delta, the same star as the colonies of Aerilon, Canceron and Aquaria. It is known only from the official map of the system.
- What was Styx's atmosphere like?
- Styx had a dense reducing atmosphere composed of carbon dioxide and sulfides.
- Where was Styx located?
- Styx lay in the Cyrannus star system, the cluster of stars and worlds settled by the people who had departed Kobol. It orbited the star Helios Delta.
Sources
- WebTwelve Colonies map, Caprica, Official map of the Cyrannus system made for Caprica (Syfy, 2010)
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Followed from this entry

Kobol: humanity's lost homeworld
Kobol was the ancestral home of the Twelve Tribes, abandoned for two thousand years. The fleet found the Tomb of Athena there, and with it the way to Earth.

Cyrannus: the Colonies' four suns
Four stars in a double binary, Helios Alpha through Delta, holding all Twelve Colonies. Refugees from Kobol settled them two thousand years back.

Twelve Colonies of Kobol
The United Colonies of Kobol, also called the Twelve Colonies of Kobol, was the interplanetary state that represented humanity from the Cylon War until its dissolution upon the settling of the second Earth.
Also in Reimagined Series
The red moon: where Starbuck was shot down and flew a Raider home
The red moon is a lifeless, waterless world orbiting a gas giant many jumps from the Twelve Colonies. Weeks after the Fall, Kara Thrace ejected into its frozen carbon dioxide atmosphere, then got off it by gutting the Cylon Raider she had shot down and flying it back into space.

Aerilon
Aerilon was an agricultural world and one of the Twelve Colonies of Kobol. Known as the food basket of the Colonies, it was a poor, working-class farming world and the birthplace of Gaius Baltar.

Aquaria
Aquaria was a cold, sparsely populated ocean world and one of the Twelve Colonies of Kobol. Official guides describe it as a former research outpost that grew into a frontier colony governed by direct democracy.
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