Scorpia Traveller: civilian ship of the Fleet
When this civilian ship docked with Galactica in the weeks after the Fall, a Number Five Cylon crossed with the disembarking passengers and bombed the battlestar.
A Number Five walked onto Galactica in a crowd of refugees, and the crowd came off Scorpia Traveller. That docking, in the weeks after the Fall of the Twelve Colonies, is what the ship is remembered for. (Battlestar Galactica, "Litmus")
The docking#
Scorpia Traveller was one of the civilian craft that got clear of the destruction of the Twelve Colonies and took its place in the refugee fleet. Some weeks into the flight, it made a docking with Galactica. (Battlestar Galactica, "Litmus")
What came across with the passengers#
The Cylon used the transfer as cover. A Number Five, a copy of Aaron Doral, put himself among a group of civilians leaving Scorpia Traveller, slipped past the security checks with them, and once he was aboard the battlestar he set off a suicide bomb close to Commander Adama, who survived. The ship itself survived too. (Battlestar Galactica, "Litmus")
Sources
- EpisodeBattlestar Galactica, "Litmus", Season 1, Episode 6 (2005)
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Followed from this entry

Galactica
Galactica was a Jupiter-class battlestar that served the Colonial Fleet from the Cylon War until the discovery of Earth. Never networked, it survived the Fall of the Twelve Colonies and shepherded the last fifty thousand humans across uncharted space before being scuttled into the sun.

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.

Fall of the Twelve Colonies
A single day of Cylon attack killed billions of people across Colonial space. Barely fifty thousand escaped in a refugee fleet.

Number Five
The Number Fives were a model of humanoid Cylon, all of whom went by the name Aaron Doral. They infiltrated Colonial society before the Fall of the Twelve Colonies and are believed extinct after the Cylon Civil War.

Scorpia: the Colonies' playground
A ringed jungle world of Helios Gamma that lived on its tourist trade, and also held the Scorpion Fleet Shipyards that built for the Colonial Fleet.

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.
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