Installation 04: Difference between revisions

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(Undo revision 1164743 by Topal the Pilot (talk) no, you're missing a factor of п. The ring is a circle. It has circumference of 31,414km. It's simple maths.)
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Installation 04 was the first Halo installation encountered by humanity, as well as first to be destroyed. Its destruction triggered the activation of a portal leading to [[Trevelyan|Shield World 006]] within [[Onyx]], and also caused [[Installation 00|the Ark]] to start constructing a [[Installation 04B|replacement ring]].
Installation 04 was the first Halo installation encountered by humanity, as well as first to be destroyed. Its destruction triggered the activation of a portal leading to [[Trevelyan|Shield World 006]] within [[Onyx]], and also caused [[Installation 00|the Ark]] to start constructing a [[Installation 04B|replacement ring]].


===Post-destruction===
===Debris field===
[[File:H2A - Alpha Halo remains.jpg|thumb|right|250px|The burning wreckage of Installation 04, surrounded by vessels of the Covenant armada in the aftermath of the battle.]]
[[File:H2A - Alpha Halo remains.jpg|thumb|right|250px|The burning wreckage of Installation 04, surrounded by vessels of the Covenant armada in the aftermath of the battle.]]
There is now a large field of debris where Installation 04 was, though a few large chunks of the ring remain.<ref>'''[[Halo 2]]''', campaign level ''[[The Heretic]]''</ref> Some smaller pieces of the Installation 04 have landed on Basis, while others have burned up in Threshold's atmosphere upon entry.<ref>'''[[Halo 2]]''', multiplayer map ''[[Burial Mounds]]''</ref>
There is now a large field of debris where Installation 04 was, though a few large chunks of the ring remain.<ref>'''[[Halo 2]]''', campaign level ''[[The Heretic]]''</ref> Some smaller pieces of Installation 04 have landed on Basis, while others have burned up in Threshold's atmosphere upon entry.<ref>'''[[Halo 2]]''', multiplayer map ''[[Burial Mounds]]''</ref> [[Alpha Shard|One damaged fragment]] notably made a slipspace jump as a safety measure, and ended up in a distant system.<ref name="wp shard"/>
 
The UNSC's peace treaty with the Covenant forbids either party from landing on the remains of Installation 04.<ref name="nf1"/>
 
====Lost fragment====
{{Main|Alpha Shard}}
When the ''Pillar of Autumn''<nowiki>'</nowiki>s reactors went critical, Installation 04 attempted to activate a safety measure and make a slipspace jump. However, this self-preservation protocol was only partly successful, and only a small portion of the ring managed to enter slipspace before the ''Autumn''<nowiki>'</nowiki>s reactors overloaded and destroyed the ring. The surviving fragment of the Halo reentered normal space in the vicinity of a red giant star some distance away from the [[Orrichon system]] and was caught in the giant star's orbit.<ref name="wp shard">[https://www.halowaypoint.com/en-us/universe/locations/halo-ring-fragment '''Halo Waypoint - Universe''': ''Alpha Shard'']</ref> This fragment was home to a unique element apparently created by the heat of the ring's explosion and not found elsewhere in the universe. The element was later refined and used in a [[bioweapon]] unleashed in a [[terrorist]] attack on [[Sedra City]].<ref name="nf1">'''Halo: Nightfall''' - ''Chapter One''</ref>


====The ''Mona Lisa''====
====The ''Mona Lisa''====
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===Replacement===
===Replacement===
{{main|Installation 04B}}
{{main|Installation 04B}}
Shortly after the destruction of the Halo, [[Installation 00]] began to automatically construct a new Halo to replace Installation 04. This exact copy of the first Halo ring was nearing completion only a few months after the first ring was destroyed, but was also subsequently destroyed when it was fired before it was ready by the John-117 and Cortana. 343 Guilty Spark attempted to prevent this, but was finally destroyed by the Master Chief with the help of Sergeant Johnson in this new ring's [[Control Room]].
Shortly after the destruction of the Halo, [[Installation 00]] began to automatically construct a new Halo to replace Installation 04. This exact copy of the first Halo ring was nearing completion only a few months after the first ring was destroyed, but was also subsequently [[Raid on Installation 04B|destroyed]] when it was fired before it was ready by the John-117 and Cortana. 343 Guilty Spark attempted to prevent this, but was finally destroyed by the Master Chief with the help of Sergeant Johnson in this new ring's [[Control Room]].
{{Clear}}
 
===Post-war===
The UNSC's [[Treaty of 2552|peace treaty]] with the Covenant forbids either party from landing on the remains of Installation 04.<ref name="nf1"/>
 
====Lost fragment====
{{Main|Alpha Shard}}
When the ''Pillar of Autumn''<nowiki>'</nowiki>s reactors went critical, Installation 04 attempted to activate a safety measure and make a slipspace jump. However, this self-preservation protocol was only partly successful, and only a small portion of the ring managed to enter slipspace before the ''Autumn''<nowiki>'</nowiki>s reactors overloaded and destroyed the ring. The surviving fragment of the Halo reentered normal space in the vicinity of a red giant star some distance away from the [[Orrichon system]] and was caught in the giant star's orbit.<ref name="wp shard">[https://www.halowaypoint.com/en-us/universe/locations/halo-ring-fragment '''Halo Waypoint - Universe''': ''Alpha Shard'']</ref> This fragment was home to a unique element apparently created by the heat of the ring's explosion and not found elsewhere in the universe. The element was later refined and used in a [[bioweapon]] unleashed in a [[terrorist]] attack on [[Sedra City]].<ref name="nf1">'''Halo: Nightfall''' - ''Chapter One''</ref> Alpha Shard was eventually destroyed after a [[Mission to Alpha Shard|classified mission]].<ref>'''Halo: Nightfall''' - ''Chapter Five''</ref>
 
====Assessment of debris on Basis====
Sometimes after the war, UNSC [[SPARTAN-IV program|Spartan-IV operatives]] were sent on a reconnaissance mission to [[Basis]]. They used for the first time the [[VECTOR-class Mjolnir]] armor, built from Covenant [[Luminary]]-related technologies and designed for artifact retrieval. Their covert mission was to assess the debris of Alpha Halo scattered on the moon's surface.<ref>'''Halo 5: Guardians''', ''[[VECTOR-class Mjolnir]] armor description''</ref>
 
==Trivia==
==Trivia==
[[File:Inst04detail.png|thumb|250px|Detail of the outer surface of the ring in ''Anniversary''.]]
[[File:Inst04detail.png|thumb|250px|Detail of the outer surface of the ring in ''Anniversary''.]]
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