Moirae

Moirae is a former Forge World of the Adeptus Mechanicus located on the north-western edge of the Segmentum Solar. During the Nova Terra Interregnum in the early 35th Millennium, the Imperium was fractured into a number of different warring factions. This included great swathes of the Adeptus Mechanicus and their closest allies, who were riven with internal rebellion due to the pernicious doctrine espoused by the Tech-Priests of Moirae, which went against the orthodox teachings of the Cult Mechanicus. The resulting doctrinal conflict would come to be known as the Morai Schism. Eventually, the world of Moirae suffered the ignominious fate of being blasted to ashes by a large fleet sent by Mars. Despite the Moirae being rendered into an uninhabitable Dead World, the conflict between traditionalist and radical elements of the Adeptus Mechanicus would continue to flare up intermittently throughout the next millennium before the schism was finally ended.

History
The early history of Moirae was not well known within the official Imperial record. Presumably it was most likely discovered and colonised by early Mechanicum Explorators during the Dark Age of Technology due to it's close proximity to Mars in the Segmentum Solar. The first notable mention of this minor Forge World occurred during the early 35th Millennium during the Nova Terra Interregnum. This was a period of division and civil war in which the Imperium became fractured into warring and disparate factions which cut across the lines of the Adeptas and turned former allies against each other. During this period it was not just the Imperium's governance and religion which suffered schism, the Adeptus Mechanicus was also afflicted with division and internal warfare brought about by doctrinal differences and competing powers. One of the most acrimonious of these internal conflicts occurred during the so-called Moirae Schism, a dogmatic battle between Martian Orthodoxy and a radical creed based upon the prophetic writings of a triad of tech-mystics based on the minor forge world of Moirae.

The Moirae Schism
The Moirae Schism was one of the most divisive and widespread to afflict the Adeptus Mechanicus since the Horus Heresy. The schism erupted during the widespread civil strife of the Nova Terra Interregnum, and this factor allowed the swift spread of radical doctrines that would perhaps have been quickly quashed in a more stable period of the Imperium's history. The Moirae tech-creed was based on the prophetic wave calculations of a triad of tech-mystics enshrined within Moirae's colossal data-looms who believed that they had discerned a series of predictive patterns within the micro-fluctuations of the Astronomican beacon. These Gematric patterns they believed contained the word of the Omnissiah-God-Emperor from which the skein of future history and humanity's destiny could be read. They compiled the fruits of their apocalyptic divinations within encrypted archives, copies of which quickly spread through many of the Cult Mechanicus' sects. These radical teachings included among other visions and interpretations of the Emperor's will, veiled references to the future overthrow of Mars and the fusion of the Cult Mechanicus and the Ecclesiarchy into a unified whole. Such claims were treated (unsurprisingly) as dark sedition by the Mechanicus authorities on Mars and civil war was quickly sparked between traditionalist and radical elements. One of the first casualties of the conflict was the forge world of Moirae itself, blasted to ashes by the Martian fleet. But by this time the schismatic creed had spread. Conflict between its advocates, the Martian Orthodoxy and other opposing radical groups would flare up intermittently throughout the next millennium before the schism was finally ended and its surviving adherents brought back into the Cult Mechanicus' fold.