Colonisation of the Orion Arm by the Terragen Civilisation originated from a single location, Earth, and spread out in a number of waves of increasing intensity. The first wave was that of the a-human AIs, many of which colonised minor systems in the Inner Sphere and elsewhere which were unsuitable for humans, and generally these systems became isolated no-go zones.
Some of these solipsist AI clades that were not assimilated by the second wave front, that of the main terragen empires, did simply remain in pockets and no-go zones. Rather they cleverly turned things around and decided to do the assimilating themselves. A number of aggressive AI factions overwhelmed or subverted nearby human colonies, and threatened to expand back towards the Inner Sphere. Backscattering waves of a-human AI have been a fairly common occurrence throughout the history of the Terragen expansion.
Similarly a number of human colonies began to send out secondary waves of colonisation themselves; Penglai and Beta Virginis were two early examples, while the Conver Ambi became expansive and almost overwhelmed the Inner Sphere at one point. More recently the Oracle Machines and the Laughter Hegemony have produced strong secondary waves of colonisation, leading to serious interstellar conflicts.
Some evidence of backscattering waves has been observed in distant high-energy emission civilisations, in the Milky Way galaxy and elsewhere, sometimes apparently leading to the disappearance of whole cultures. It is possible that some, or many, of the vanished civilisations of the past also disappeared because of backscatter of this kind, although the importance of this effect is a matter of debate.
Colony - Text by M. Alan Kazlev Dependent member of a larger polity or empire. It is ruled by the parent polity, usually through a governor or colonial administration AI. The colonists may have an elected council to petition the governor, or an elected or chosen representative in the parent polity or empire, but they have no say in their own government. Colonies may be established as part of an expansionist drive by the parent polity or empire, or they may be regions that already have a society but were technological inferior and hence easily conquered. Colonies tend to be less organized and with less government (less infrastructure, luxury items, no welfare services or angelnets, etc.) than the parent polity. See also territory, protectorate.