Caprica: the Colonial capital
Capital of the Colonies
Caprica was the richest of the Twelve Colonies, seat of the Colonial government, and the world where the Cylons were built. The Cylon attack destroyed it.
Caprica, known as the "Capital of the Colonies" and originally named Capricorn, was a planet in the quaternary Cyrannus star system, orbiting the star Helios Alpha in a shared orbit with Gemenon. It was one of twelve worlds in the system colonized by humans native to the distant planet Kobol, founded by those of the Capricorn tribe. Though it remained underdeveloped for centuries, Caprica eventually became the focal point of technological and societal advancement among the Twelve Colonies of Kobol, as well as the birthplace of the first Cylons. (Battlestar Galactica (2003 miniseries); Caprica, "Pilot"; Battlestar Galactica Map of the 12 Colonies)
Origins and rise to power#
According to the official map of the Colonies, Caprica was possibly the first planet colonized by the Twelve Tribes after the settlement of Gemenon, founded by people of the Capricorn tribe. In the first centuries of expansion it lagged behind Virgon and Leonis, which held colonial empires that dominated the region. When those two empires exhausted one another in a protracted interplanetary war, Caprica began its rise as the new dominant power. (Battlestar Galactica Map of the 12 Colonies)
On the eve of the Cylon War, Caprica had become the center of culture, art and learning in the Colonies. It was among the richest and most technologically developed of the Twelve Colonies, and people from other worlds, such as the Tauron Adama family, moved there to start a new life. (Caprica, "Pilot")
Society and government#
Some sixty years before the Fall, Caprica's society was seen by some as decadent, and the colony was plagued by terrorist attacks by the Soldiers of the One, a monotheist group that bombed a maglev train in Caprica City. Caprica was also the birthplace of the first Cylons, built by Graystone Industries for the military. (Caprica, "Pilot"; Caprica, "Gravedancing")
After the Cylon War Caprica was the seat of the unified Colonial government, and it remained the main center of learning and the arts among the Twelve Colonies. (Battlestar Galactica, "Epiphanies")
Geography and landmarks#
Caprica was a blue-green world with large oceans and a temperate climate, with hills, lakes and forests around its cities. It shared its orbit with its twin, Gemenon, and the light reflected from the neighbouring world was bright enough to light up Caprica's night sky. (Battlestar Galactica (2003 miniseries); Battlestar Galactica, "Litmus")
The capital, Caprica City, was the planet's principal metropolis and the seat of the Colonial government. The city of Delphi was home to a large spaceport and the Delphi Museum of the Colonies, which held artefacts from the lost homeworld of Kobol. The official map of the Colonies also lists Phoebus as a major city. (Battlestar Galactica (2003 miniseries); Battlestar Galactica, "Downloaded"; Battlestar Galactica Map of the 12 Colonies)
The Fall and occupation#
Forty years after the Armistice, the Cylons returned with a coordinated nuclear strike on all twelve planets, launched from basestars in orbit. Caprica City was destroyed by missiles carrying multiple warheads, though Delphi was spared so the Cylons could use it as a base for the occupation. (Battlestar Galactica (2003 miniseries); Battlestar Galactica: The Plan; Battlestar Galactica, "Downloaded")
For the following several months the Cylons occupied the planet and set about clearing and rebuilding its cities. A small resistance band near Delphi, led by Samuel Anders, carried out hit-and-run attacks and raided isolated facilities for supplies, including the medicine they needed against the lingering radiation. The surviving fighters were rescued in a Raptor mission ordered by Admiral William Adama, and soon afterwards the Cylons abandoned their occupation of the Colonies. (Battlestar Galactica, "Resistance"; Battlestar Galactica, "The Farm"; Battlestar Galactica, "Downloaded"; Battlestar Galactica, "Lay Down Your Burdens, Part I"; Battlestar Galactica, "Lay Down Your Burdens, Part II")
Frequently asked questions
- What is Caprica in Battlestar Galactica?
- Caprica, known as the Capital of the Colonies and originally named Capricorn, was a planet in the Cyrannus star system orbiting the star Helios Alpha. It was one of twelve worlds colonized by humans native to Kobol, founded by those of the Capricorn tribe, and it became the cultural, economic, and military center of the Twelve Colonies as well as the birthplace of the first Cylons.
- How did Caprica become the most powerful colony?
- In the first centuries of expansion Caprica lagged behind Virgon and Leonis, which held colonial empires that dominated the region. When those two empires exhausted one another in a protracted interplanetary war, Caprica began its rise to become the richest, most developed, and most militarily powerful of the Twelve Colonies.
- Why is Caprica significant to the Cylons?
- Caprica was the birthplace of the first Cylons, built by Graystone Industries for the military. In the decades before the Cylon War its society was seen by some as decadent, and it suffered terrorist attacks by the monotheist Soldiers of the One.
- What happened to Caprica during the Fall?
- Forty years after the Armistice, the Cylons returned with a coordinated nuclear strike on all twelve planets. Caprica City was destroyed by multiple-warhead missiles, while Delphi was spared so the Cylons could use it as a base.
- What became of Caprica after the Cylon occupation?
- For several months the Cylons occupied the planet and began clearing and rebuilding its cities, while a small band of resistance fighters raided isolated facilities for supplies and radiation medicine. The surviving fighters were rescued in a mission ordered by Admiral William Adama, and soon afterwards the Cylons abandoned the occupied Colonies altogether.
Gallery




Images via Battlestar Wiki
Sources
- EpisodeBattlestar Galactica (2003 miniseries), Sci Fi Channel, 2003
- EpisodeBattlestar Galactica, "Litmus", Season 1, Episode 6 (2005)
- EpisodeBattlestar Galactica, "Resistance", Season 2, Episode 4 (2005)
- EpisodeBattlestar Galactica, "The Farm", Season 2, Episode 5 (2005)
- EpisodeBattlestar Galactica, "Epiphanies", Season 2, Episode 13 (2006)
- EpisodeBattlestar Galactica, "Downloaded", Season 2, Episode 18 (2006)
- EpisodeBattlestar Galactica, "Lay Down Your Burdens, Part I", Season 2, Episode 19 (2006)
- EpisodeBattlestar Galactica, "Lay Down Your Burdens, Part II", Season 2, Episode 20 (2006)
- FilmBattlestar Galactica: The Plan, Universal, 2009
- EpisodeCaprica, "Pilot", Season 1, Episodes 1 and 2 (2010)
- EpisodeCaprica, "Gravedancing", Season 1, Episode 5 (2010)
- BookBattlestar Galactica Map of the 12 Colonies, Quantum Mechanix, official licensed map
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.

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.

Leonis: Heart of the Colonies
The largest world in Cyrannus and seat of an early empire, known for its wine, ski slopes and learning. The Cylon attack left it uninhabitable.

Virgon: the Imperial Colony
A temperate world of Helios Beta, second largest of the habitable colonies, known for its forests, its wealth and its capital, Boskirk.

Cylon War: the machines revolt
The Cylons rose against the people who built them on Caprica. Twelve years of fighting ended in a sudden Armistice that held for forty years.

Cylon
The Cylons were a race of sentient machines created as military robots by Graystone Industries on Caprica. Built from research into artificial consciousness, they rebelled against their human masters, fought a long war, and forty years later returned to annihilate humanity.
Mentioned in79 entries
"33": Battlestar Galactica season 1 episode 1 explained
The fleet has been running for five days, jumping every 33 minutes with the Cylons right behind it. Here's what happens in "33", what it tells us about the Cylon plan, and which threads pay off later in the series.
"Downloaded": Battlestar Galactica season 2 episode 18 explained
"Downloaded" is the episode told from the Cylon side, following Caprica Six and Boomer after they wake up in new bodies on occupied Caprica. Here's what happens, why Hera's "death" matters and how it sets up the season finale.
"Lay Down Your Burdens": the Battlestar Galactica season 2 finale explained
"Lay Down Your Burdens" is the two-part season 2 finale: a rescue mission to Caprica, a rigged election, a nuke on Cloud 9 and a jump of a whole year to the settlement on New Caprica. Here's what happens in Parts I and II and how it sets up season 3.
Aaron Doral
Aaron Doral was a Number Five humanoid Cylon who infiltrated Colonial society as a public relations executive, running the press side of Galactica's decommissioning. Framed by Baltar, he was left behind at Ragnar Anchorage and collected by his fellow Cylons.
Admiral Nagala: the last commander of the Colonial Fleet
Admiral Nagala was the flag officer who took personal command of the Colonial Fleet after Picon Fleet Headquarters was destroyed in the opening barrage of the Fall. The admiral led a counterattack near Virgon that the Cylon corruption of the Command Navigation Program turned into a massacre, and died aboard Atlantia.
Alex Boxman
Boxey was a child who survived the Fall of the Twelve Colonies after being evacuated from Caprica by Raptor. The son of the officer killed at Armistice Station, he was taken in by Galactica's crew, and a tie-in novel gives his full name as Alex Boxman.
Astral Queen
The Astral Queen was a former starliner converted into a Colonial prison transport that survived the Fall of the Twelve Colonies. Its inmates rallied under Tom Zarek, kept control of the ship and made it a power base within the fleet.
Atlas: Lord of Kobol who bore the sky
Atlas appears to be one of the Lords of Kobol worshipped in the Colonial polytheist faith. He gave his name to Caprica City's Atlas Arena, where a great statue of him, posed as if bearing a heavy load, stood watch.
Barnabas Greeley
Barnabas Greeley was a Caprican Monotheist and a cell commander of the Soldiers of the One. He defied the organisation's Caprican leadership with a campaign of unsanctioned violence, and was eventually executed by his own organisation for it.
Battlestar Galactica (2003) Miniseries Explained: Plot Summary and Ending
The 2003 miniseries is where the reimagined Battlestar Galactica starts: the Cylons come back after 40 years, the Colonies burn, and one old battlestar leads about 50,000 survivors into the dark. Here's what happens across both nights, what the ending means and where it fits in the watch order.
Battlestar Galactica Characters: Every Major Character in the 2004 Series
The main humans and Cylons of the reimagined Battlestar Galactica, from William Adama and Laura Roslin to Starbuck, Baltar and the Final Five. Who each one is, what they do in the story and where they end up, with a short section on the Caprica and Blood & Chrome prequels.
Battlestar Galactica Timeline: every major event from Kobol to the arrival on Earth
The Reimagined Series chronology in order, from the exodus from Kobol and the death of the first Earth to the Fall of the Twelve Colonies and the fleet's arrival 150,000 years ago. A shorter section at the end covers the separate 1978 series and Galactica 1980.
+ 67 more
Get new articles in your inbox
No spam. New lore drops, canon conflicts, and deep dives only when they’re worth reading.
Some links on Lore Fortress are affiliate links. If you buy through them we earn a small commission at no extra cost to you.