Hera: gas giant of Helios Beta
the third-largest world of Cyrannus
Hera was a gas giant in the Cyrannus star system, orbiting the star Helios Beta. It was the third-largest planet in the system and was named for a god of the Colonial religion, the patron deity of Gemenon.
Hera was a gas giant in the Cyrannus star system, orbiting the star Helios Beta. It was the third-largest planet in the system and shared its name with a god of the Colonial religion, the patron deity of the colony Gemenon. (Battlestar Galactica: Map of the Twelve Colonies)
A world of Cyrannus#
Hera ranked as the third-largest planet in the Cyrannus star system. It was a gas giant in orbit around Helios Beta, one of the suns about which the worlds of the Twelve Colonies of Kobol and their neighbors turned. The planet took its name from a deity of the Colonial religion, the same goddess venerated as the patron god of Gemenon. None of this is shown on screen; it comes from the official map of the Twelve Colonies published by Syfy and Universal. (Battlestar Galactica: Map of the Twelve Colonies)
Moons#
Hera was attended by twenty-nine moons. The two largest of these were named Euboea and Iris, and twenty-seven further moons accompanied them in orbit around the gas giant. (Battlestar Galactica: Map of the Twelve Colonies)
Frequently asked questions
- What was the planet Hera in Battlestar Galactica?
- Hera was a gas giant in the Cyrannus star system, orbiting the star Helios Beta. It was the third-largest planet in the system and was named for a god of the Colonial religion, the patron deity of Gemenon.
- How many moons did Hera have?
- Hera had twenty-nine moons. The two largest were named Euboea and Iris, with twenty-seven others in addition to them.
- Was the planet Hera one of the Twelve Colonies?
- Hera was a world of the Cyrannus star system rather than one of the inhabited Twelve Colonies. It was a gas giant named after the same deity who served as patron god of the colony Gemenon.
Sources
- WebBattlestar Galactica: Map of the Twelve Colonies, Official star map of the Cyrannus system, Syfy and Universal (2010)
Spotted a factual error or a primary source we missed? Email a correction. Every flagged claim gets reviewed.
Followed from this entry

Gemenon: the First Colony
One of the Twelve Colonies settled by the refugees from Kobol, and the most devout of them all, a poor, deeply religious world that suffered with the rest in the Fall.

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.
Mentioned in10 entries
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.
Karl Agathon
Karl "Helo" Agathon was a Colonial Fleet officer who, stranded on Caprica after the Fall of the Twelve Colonies, fell in love with a Number Eight Cylon he later married. He became the only successful father of a human-Cylon hybrid child, Hera.
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.
Laura Roslin: the dying leader
Secretary of Education until the Cylon attack killed everyone above her. Sworn in as President, she became the dying leader of Colonial prophecy.
Lee Adama: Leland Adama, callsign Apollo
Commander Leland "Apollo" Adama was a Colonial Fleet officer, the sole surviving son of William Adama, who served as Galactica's CAG before turning to politics as the Caprican delegate to the Quorum and, in time, interim President of the Twelve Colonies.
Ouranos
Ouranos was a dense, mineral-rich asteroid belt in the Helios Beta system that separated its inner and outer worlds. Its resources made it a frequent point of conflict between rival colonies.
Saul Tigh
Colonel Saul Tigh was the executive officer of the battlestar Galactica and William Adama's oldest friend, a hard-drinking and embittered soldier who later discovered he was one of the Final Five Cylons yet never stopped thinking of himself as a Colonial officer.
Sharon "Boomer" Valerii
Sharon "Boomer" Valerii was a Number Eight Humanoid Cylon planted within the Colonial Fleet as a sleeper agent. Awakening to her true nature drove her through betrayal and despair to become a tool of John Cavil, before a final act of redemption.
Sharon Agathon
Sharon "Athena" Agathon was a Number Eight humanoid Cylon who fell in love with Karl Agathon on occupied Caprica, defected to the Colonial Fleet, and became the first Cylon to openly serve as a Colonial officer.
The Colony
The Colony was a massive space station the Cylons built around the original ship of the Final Five after the First Cylon War, serving as their de facto homeworld. It was destroyed when Galactica raided it to recover the child Hera and it was driven into the accretion disc of a naked singularity.
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