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The exact origin of the Tyranids is unclear, save the fact that they are not of the [[Galaxy|Milky Way Galaxy]] and have only recently arrived here after travelling traveling countless millennia in the intergalactic void. It is unknown which galaxy they originated from, or for how long the Tyranid race has been on its genocidal rampage. Indeed their very name is but a title given to them by the [[Imperium]], named after the planet where they were first encountered ([[Tyran]]). Whether they left their original galaxy after they had consumed everything of worth there or are in the flight of another, even more fearsome race, is unknown. It is possible that they have been preying on other galaxies for time immemorial.^2-p6 According to another source, they have consumed one thousand galaxies and are responsible for the annihilation of millions of intelligent species.³