Changes

The Tyranids were first attracted to the [[Galaxy|Milky Way Galaxy]] when the xenos communication device known as the [[Pharos (Device)|Pharos]] was overloaded in the [[Battle of Sotha]] during the [[Horus Heresy]].{{Fn|12}} The exact origin of the Tyranids themselves is unclear, save the fact that they are not of [[The Galaxy]] and have only recently arrived here after 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, but it is believed that it is the [[Astronomican]] that is drawing the Tyranid Hive Fleet to threaten the galaxy{{fn|1j}}. Indeed their very name is but a title given to them by the [[Imperium]], named after the planet where they were first encountered ([[Tyran]]). It is possible that they have been preying on other galaxies since time immemorial.{{Fn|1b}} According to another source, they have consumed one thousand galaxies and are responsible for the annihilation of millions of intelligent species.{{Fn|3}}