The Scarran Imperium rose to its current position as a major galactic power within the last 12,000 cycles and within that time they have come into conflict with the Peacekeepers, both civilisations laying claim to parts of the so-called Uncharted Territories into which their populaces might expand. How long the state of cold war has existed between them is unknown - though legend tells of the Eidelons creating a peace between the two species over 12,000 years prior to the "Farscape" series at the temple on Arnesk, the testimony of the Eidelons themselves as to their lack of familiarity with the Scarran species would indicate the story as the galaxy knows it is fallacious.