Editing Intergalactic space

{{Era|Forerunner|Covenant|Human|UNSC|HCW|Post}}

'''Intergalactic space''' is the region of space between galaxies. The volume of intergalactic space is mostly empty and has an extremely low density. In rare cases, naturally occurring objects such as [[Wikipedia:Intergalactic star|stars]] may be found outside galaxies. The astronomical objects closest to the [[Milky Way Galaxy]] are the two small satellite galaxies known as the [[Magellanic Clouds]],<ref>'''[[Halo: Cryptum]]''', ''page 268''</ref> one of which, the [[Path Kethona|Large Magellanic Cloud]], was believed by the Forerunners to have been most likely the point of origin of the [[Flood]].<ref name="sil">'''[[Halo: Silentium]]''', ''page 58''</ref>

The [[Forerunner]]s were capable of effortlessly traveling into intergalactic space, and even constructed at least two major installations, known as [[Ark]]s, there.<ref>'''[[Halo: Primordium]]''' ''page 343''</ref> One of these structures, [[Installation 00]] or the lesser Ark, became the site of the [[Battle of Installation 00|final battle]] of the [[Human-Covenant War]] in [[2552#December|December 2552]].<ref>'''[[Halo 3]]''', campaign level ''[[The Ark (level)|The Ark]]''</ref> For purposes other than the use of the Arks, the Forerunners rarely ventured outside the margins of the galaxy, as there were no resources of interest.<ref name="c115">'''[[Halo: Cryptum]]''', ''pages 115-116''</ref>

However, in their own prehistory, over [[10,000,000 BCE|ten million years]] before the Flood's emergence, ancient Forerunners traveled to the Large Magellanic Cloud—known to them as Path Kethona—in the final phase of their [[Forerunner-Precursor war|genocide]] of the [[Precursor]]s. The true purpose of this journey was eventually lost to time and by around [[98,395 BCE]], a Forerunner expedition crew traveled to Path Kethona aboard the purpose-built ship ''[[Audacity]]'' in order to find evidence of the prehistoric journey—which had by then been mythologized as an exploratory mission.<ref name="sil"/> Nearly 950 years later, the [[Ur-Didact|Didact]], on the run from Forerunner authorities after his revival from his first [[Cryptum]], had [[Didact's ship|his ship]] make a series of irregular [[Slipstream space|slipspace]] jumps to prevent [[core authority]] from tracking the journey. One of these jumps led into intergalactic space where the ship entered a long, obscure orbit high about the galactic plane and tens of thousands of light-years from any feasible destinations.<ref name="c135">'''[[Halo: Cryptum]]''', ''pages 135-136''</ref>