Aether: civilian ship of the ragtag fleet

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 decades long war, and forty years later returned to annihilate humanity.

Fall of the Twelve Colonies

The Fall of the Twelve Colonies, also called the Second Cylon War, was a single-day Cylon campaign of total annihilation against Colonial space. It wiped out almost the entire human population of over twenty nine billion and left barely fifty thousand survivors in a fleeing refugee fleet.

Galactica: the last battlestar of the Colonial Service

In the Original Series continuity, the Galactica was a Colonial battlestar that served over five hundred yahrens in the Thousand-Yahren War. After the destruction of the Twelve Colonies of Man at Cimtar, it survived to lead a rag-tag fugitive fleet on the search for Earth.

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.

Adrasteia

Adrasteia was a civilian ship that escaped the Fall of the Twelve Colonies as part of the ragtag fleet. It carried roughly 765 crew and passengers and survived into deep space about a year after the Fall.