From Warhammer 40k - Lexicanum
538 bytes added,
04:48, 5 February 2008
Some Technomagi of the [[Adeptus Mechanicus]] think that the Hive Mind might just be the psychic network that links the Tyranid race and permits them to access the collective knowledge of the location and disposition of all other Tyranid creatures. Others think that it is in fact an incredibly powerful psychic monster using the Tyranids as puppets, while others think that it might be one of the [[Old Ones]].
All that anyone knows ==Shadow in the Warp=={{main|Shadow in the Warp}}The hive fleet is so unimaginably vast that it creates an impenetrable disturbance like a huge blocking shadow. This shadow is what the Tyranids fight to feed dark, impenetrable will of the hive mind itself, before which the astral spirit of a puny psyker is as safe as a candle in a hurricane. The shadow cast by the hive mind presents an impenetrable wall which prevents [[astropath]]s from sending or receiving telepathic messages, stops spacecraft entering the [[warp]] and that it obscures forces spacecraft already in the warp wildly off-course. As a hive fleet advances, the area of the [[AstronomicanImperium]]'s lightswallowed up by it simply stops communicating, indicating an extremely powerful psychic presencegiving almost no clues as to what has happened.
==Sources==
