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{{Era|Forerunner|Covenant|Human|UNSC|HCW|Post}}
{{Status|Canon}}
{{Planet infobox
|name=Substance
|image=[[File:Coelest.jpg|265px]]<br>Substance and [[Installation 05]]. Distances are not to scale.
|system=[[Coelest system]]{{Ref/Reuse|evg}}{{Ref/Book|Id=Enc22P346|Enc22|Page=346}}
|body=[[Coelest]]{{Ref/Reuse|evg}}
|position=Fourth planet{{Ref/Reuse|evg}}
|moon(s)=[[Opusculus]]<ref>'''[[Halo: The Essential Visual Guide]]''', ''page 46''</ref>{{Ref/Reuse|Enc22P346}}
|diameter={{Convert|82749|km|mi|sp=us}}{{Ref/Reuse|evg}}
|gravity=
|daylength=
|yearlength=
|atmosphere=;Gas: [[hydrogen]], [[helium]], [[methane]]{{Ref/Reuse|evg}}
;Liquid: [[ammonia]], [[water]]{{Ref/Reuse|evg}}
|temperature=
|demonym=
|species=
|population=
|colonized=
|government=
}}


[[File:Coelest.jpg|thumb|Substance [[Installation 05]].]]
'''Substance''', also referred to as '''Coelest IV'''<ref name="lootcrate8">'''[[Halo Legendary Crate]]''', ''[[Halo Legendary Crate/Data Drops|Data Drop #8]]''</ref>, is a blue-white ice giant in the [[Coelest system]].{{Ref/Reuse|Enc22P346}}{{Ref/Reuse|evg}} It is the fourth planet in the system and is the planet which [[Installation 05]] orbits.<ref name="evg">'''Halo: The Essential Visual Guide''', ''page 190''</ref>{{Ref/Reuse|Enc22P346}} Substance is orbited by eight satellites, only one of which, [[Opusculus]], is a natural [[moon]]. The rest include Installation 05, and six dormant [[Forerunner]] facilities on predetermined orbital paths.{{Ref/Reuse|Enc22P346}}{{Ref/Reuse|evg}} An [[asteroid]] field is located close to Substance at 2.4 AU from Coelest.<ref>'''[[Halo: Ghosts of Onyx]]''', ''page 189''</ref>
[[Image:D-Halo.jpg|thumb|A more close up view of Substance and Installation 05.]]
'''Substance'''<ref>http://forums.bungie.org/halo/archive24.pl?read=700986</ref><ref group="note">While not named during the game, the file containing the planet's graphics were found to be named "Substance". Similarly, there was a file called "[[Threshold]] and [[Basis]]" in ''[[Halo: Combat Evolved]]''.</ref> is a greenish-blue gas giant, and it is the planet which [[Installation 05]] orbits. It is similar to the planet [[wikipedia:Uranus|Uranus]], due to its color and mass.


Unlike on [[Installation 04]] where Threshold can be seen quite clearly (especially on the level [[The Truth and Reconciliation (Level)|The Truth and Reconciliation]]), on Installation 05, Substance is very difficult to see in the sky. In fact, none of the levels in ''[[Halo 2]]'' (except for the cutscenes) can the planet be seen. This may suggest that Installation 05 has a denser atmosphere than Installation 04, or simply that the locations featured in ''Halo 2'' have thicker clouds. Additionally, the locations at which the levels take place could be positioned relative to Substance such that Substance is 'beneath' the ring, and thus impossible to see. In the levels [[Delta Halo (Level)|Delta Halo]] and [[Regret (Level)|Regret]], the other side of the ring can barely be seen in the sky. There is also a heavy storm front in the direction of the [[Sentinel Wall]], and the levels [[Sacred Icon (Level)|Sacred Icon]], and [[Quarantine Zone (Level)|Quarantine Zone]] are based inside of a heavy snowstorm.
Unlike on [[Installation 04]], where its parent planet [[Threshold]] could be seen quite clearly, especially at night,<ref>'''[[Halo: Combat Evolved]]''', campaign level ''[[The Truth and Reconciliation]]''</ref> on Installation 05, Substance is very difficult to see in the sky of Installation 05. In fact, in none of the locations on this ring seen by [[United Nations Space Command|UNSC]] forces (namely the [[Control Room (Installation 05)|Control Room]], the [[Library]], and various ruined structures) can the planet be seen. This is due to the Delta Halo's stormy weather conditions caused by a [[Flood]] outbreak that occurred some two centuries before the [[Battle of Installation 05]].{{Ref/Reuse|evg}} During the [[Great Schism]] that began on Installation 05, [[Sangheili]] and [[Jiralhanae]] vessels battled each other over Substance.<ref>'''Halo: Ghosts of Onyx''', ''page 199''</ref>


It is possible that Substance is host to a [[Gas Mine|Gas Mining Facility]] similar to the one found on Threshold. The two planets are very similar, and they both are orbited by their own [[Halos]].  
Weeks after the battle and the subsequent [[Fall of High Charity]], the {{UNSCShip|Coral Sea}} picked up [[Alo Sebukah|a dying San'Shyuum]] aboard a skiff drifting in a debris field irregularly orbiting Substance.<ref name="lootcrate8">'''[[Halo Legendary Crate]]''', ''[[Halo Legendary Crate/Data Drops|Data Drop #8]]''</ref>
 
==Trivia==
*While not named during ''Halo 2'', the file containing the planet's graphics were found to be named "Substance". Similarly, there was a file called "[[Threshold]] and [[Basis]]" in ''[[Halo: Combat Evolved]]''.<ref>[http://forums.bungie.org/halo/archive24.pl?read=700986 '''halo.bungie.org''': ''Re: Halo Wikipedia entry improvement questions'']</ref> The planet was first officially identified in ''[[Halo: The Essential Visual Guide]]''.
*The ''[[Halo Encyclopedia (2009 edition)]]'' incorrectly states that [[Installation 04]] orbits Substance. This error was not corrected in the 2011 edition.<ref>'''[[Halo Encyclopedia (2009 edition)]]''', ''page 185''</ref>
 
==Gallery==
<gallery>
File:H2A - DeltaHalo.jpg|Substance and [[Installation 05]].
File:H2A - In Amber Clad approaches Halo.png|{{UNSCShip|In Amber Clad}} approaches Substance and Installation 05.
File:H2A - Great Schism.jpg|[[High Charity]] over Substance.
File:H2A - Battle of Delta Halo.jpg|Installation 05's firing sequence being canceled over the planet.
File:H2A-Substance From Delta Halo.png|Substance seen from the surface of Installation 05.
</gallery>


==List of appearances==
==List of appearances==
*''[[Halo 2]]'' {{1st}}
*''[[Halo 2]]'' {{1st}}
*''[[Halo: Ghost of Onyx]]''
*''[[Halo: Ghosts of Onyx]]''
*''[[Halo: Broken Circle]]''
*''[[Halo 2: Anniversary]]''
*''[[Halo Mythos]]'' {{Mo}}


==Notes==
==Sources==
<references group="note"/>
{{Ref/Sources}}


==Sources==
<references/>
[[Category:Planets]]
[[Category:Planets]]
[[Category:Places]]

Latest revision as of 15:08, September 10, 2023

Substance
Coelest.jpg
Substance and Installation 05. Distances are not to scale.
Astrographical

System:

Coelest system[1][2]

Orbiting:

Coelest[1]

Orbital position:

Fourth planet[1]

Moon(s):

Opusculus[3][2]

Physical

Diameter:

82,749 kilometers (51,418 mi)[1]

Atmosphere:

Gas
hydrogen, helium, methane[1]
Liquid
ammonia, water[1]
 

Substance, also referred to as Coelest IV[4], is a blue-white ice giant in the Coelest system.[2][1] It is the fourth planet in the system and is the planet which Installation 05 orbits.[1][2] Substance is orbited by eight satellites, only one of which, Opusculus, is a natural moon. The rest include Installation 05, and six dormant Forerunner facilities on predetermined orbital paths.[2][1] An asteroid field is located close to Substance at 2.4 AU from Coelest.[5]

Unlike on Installation 04, where its parent planet Threshold could be seen quite clearly, especially at night,[6] on Installation 05, Substance is very difficult to see in the sky of Installation 05. In fact, in none of the locations on this ring seen by UNSC forces (namely the Control Room, the Library, and various ruined structures) can the planet be seen. This is due to the Delta Halo's stormy weather conditions caused by a Flood outbreak that occurred some two centuries before the Battle of Installation 05.[1] During the Great Schism that began on Installation 05, Sangheili and Jiralhanae vessels battled each other over Substance.[7]

Weeks after the battle and the subsequent Fall of High Charity, the UNSC Coral Sea picked up a dying San'Shyuum aboard a skiff drifting in a debris field irregularly orbiting Substance.[4]

Trivia[edit]

Gallery[edit]

  • Substance and Installation 05.

    Substance and Installation 05.

  • UNSC In Amber Clad approaches Substance and Installation 05.

    UNSC In Amber Clad approaches Substance and Installation 05.

  • High Charity over Substance.

    High Charity over Substance.

  • Installation 05's firing sequence being canceled over the planet.

    Installation 05's firing sequence being canceled over the planet.

  • Substance seen from the surface of Installation 05.

    Substance seen from the surface of Installation 05.

List of appearances[edit]

Sources[edit]

  1. ^ a b c d e f g h i j Halo: The Essential Visual Guide, page 190
  2. ^ a b c d e Halo Encyclopedia (2022 edition), page 346
  3. ^ Halo: The Essential Visual Guide, page 46
  4. ^ a b Halo Legendary Crate, Data Drop #8
  5. ^ Halo: Ghosts of Onyx, page 189
  6. ^ Halo: Combat Evolved, campaign level The Truth and Reconciliation
  7. ^ Halo: Ghosts of Onyx, page 199
  8. ^ halo.bungie.org: Re: Halo Wikipedia entry improvement questions
  9. ^ Halo Encyclopedia (2009 edition), page 185
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