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|name=Threshold | |name=Threshold | ||
|image=[[File:H5G Threshold.png|300px]] | |image=[[File:H5G Threshold.png|300px]] | ||
|system=[[Soell system]] | |system=[[Soell system]]<ref name="universe">[https://www.halowaypoint.com/en-us/universe/locations/threshold '''Halo Waypoint''': ''Threshold'']</ref>{{Ref/Book|Id=vis|EVG|Page=195}} | ||
|body=[[Soell]]{{Ref/Reuse| | |body=[[Soell]]{{Ref/Reuse|universe}}{{Ref/Reuse|vis}} | ||
|position=Seventh planet{{Ref/Reuse| | |position=Seventh planet{{Ref/Reuse|universe}}{{Ref/Reuse|vis}} | ||
|moon(s)=Twelve, including [[Basis]]{{Ref/Reuse| | |moon(s)=Twelve, including [[Basis]]{{Ref/Reuse|universe}} | ||
|diameter={{Convert|214604|km|mi|sigfig=7|sp=us}}{{Ref/Reuse| | |diameter={{Convert|214604|km|mi|sigfig=7|sp=us}}{{Ref/Reuse|universe}} | ||
|gravity= | |gravity= | ||
|daylength= | |daylength= | ||
|yearlength= | |yearlength= | ||
|atmosphere=;Gases: | |atmosphere=;Gases: | ||
[[Hydrogen]], [[helium]], [[methane]]{{Ref/Reuse| | [[Hydrogen]], [[helium]], [[methane]]{{Ref/Reuse|universe}} | ||
;Liquids: | ;Liquids: | ||
[[Ammonia]], [[water]],{{Ref/Reuse|vis}} [[Wikipedia:Ammonium hydrosulfide|ammonium hydrosulfide]], [[phosphorus]] compounds<ref name="atmo">'''[[Halo: First Strike]]''', ''page 79''</ref> | [[Ammonia]], [[water]],{{Ref/Reuse|vis}} [[Wikipedia:Ammonium hydrosulfide|ammonium hydrosulfide]], [[phosphorus]] compounds<ref name="atmo">'''[[Halo: First Strike]]''', ''page 79''</ref> | ||
|temperature= | |temperature= | ||
|demonym=Thresholdian{{Ref/Reuse| | |demonym=Thresholdian{{Ref/Reuse|universe}} | ||
|species= | |species= | ||
|population= | |population= | ||
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}} | }} | ||
'''Threshold''', also known as '''Soell VII''', | '''Threshold''', also known as '''Soell VII''',<ref name="Halo Channel">'''[[Halo Channel]]''': ''Encyclopedia''</ref> is a gas giant, and the seventh and largest planet in the [[Soell system]].{{Ref/Reuse|vis}} It was the gravity anchor for [[Installation 04]], which was situated at the L<sub>1</sub> [[Lagrange point]] between Threshold and its largest [[natural satellite]], [[Basis]].{{Ref/Book|Id=sybex-halo|Halo: Combat Evolved: Sybex Official Strategies & Secrets|Page=63}} | ||
Threshold's [[Earth Survey Catalog]] number is '''B1008-AG'''.{{Ref/Reuse|sybex-halo}} | Threshold's [[Earth Survey Catalog]] number is '''B1008-AG'''.{{Ref/Reuse|sybex-halo}} | ||
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==History== | ==History== | ||
===Prehistory=== | ===Prehistory=== | ||
Over 100,000 years ago, Threshold was a part of the sizeable and extensive [[Forerunner]] [[ecumene]]. Wishing to harvest the gas giant's rare and valuable gases, the Forerunners used Threshold as a mining colony.{{Ref/Reuse|ENC310}} They built numerous automated gas mining complexes in the upper atmosphere of the planet, tethered to several band orbitals, used for harvesting the [[hydrogen]], [[helium]], and [[methane]] gas of the planet. | Over 100,000 years ago, Threshold was a part of the sizeable and extensive [[Forerunner]] [[ecumene]]. Wishing to harvest the gas giant's rare and valuable gases, the Forerunners used Threshold as a mining colony.{{Ref/Reuse|ENC310}} They built numerous automated gas mining complexes in the upper atmosphere of the planet, tethered to several band orbitals, used for harvesting the [[hydrogen]], [[helium]], and [[methane]] gas of the planet.<ref name="gasmine">[https://www.halowaypoint.com/en-us/universe/locations/threshold-gas-mine '''Halo Waypoint''': ''Threshold Gas Mine'']</ref> | ||
Upon the discovery of the [[Flood]], the Forerunners refitted some of the gas mines to serve as [[Flood research facility|Flood research facilities]]. These facilities proved only one thing: more extreme measures were needed to combat the Flood and to keep them from spreading. At the end of [[Forerunner-Flood war|their war]] against the Flood, the Forerunners chose Threshold as a staging point for one of the [[Halo Array|Halo]] superweapons: [[Installation 04]]. The Halo was placed on the L<sub>1</sub> [[Lagrange point]] between Threshold and [[Basis]] and was designed to destroy all [[sentience|sentient]] life in the galaxy, thereby halting the spread of the Flood, due to starvation.{{Ref/Level|Id=oracle|H2|The Oracle}} | Upon the discovery of the [[Flood]], the Forerunners refitted some of the gas mines to serve as [[Flood research facility|Flood research facilities]]. These facilities proved only one thing: more extreme measures were needed to combat the Flood and to keep them from spreading. At the end of [[Forerunner-Flood war|their war]] against the Flood, the Forerunners chose Threshold as a staging point for one of the [[Halo Array|Halo]] superweapons: [[Installation 04]]. The Halo was placed on the L<sub>1</sub> [[Lagrange point]] between Threshold and [[Basis]] and was designed to destroy all [[sentience|sentient]] life in the galaxy, thereby halting the spread of the Flood, due to starvation.{{Ref/Level|Id=oracle|H2|The Oracle}} | ||
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===Human-Covenant War=== | ===Human-Covenant War=== | ||
[[File:H2A Cutscene CovenantAtI04.png|thumb|250px|left|Threshold and Installation 04 are discovered by the [[Covenant]].]] | [[File:H2A Cutscene CovenantAtI04.png|thumb|250px|left|Threshold and Installation 04 are discovered by the [[Covenant]].]] | ||
In [[2552]], the [[Fleet of Particular Justice]] followed the {{UNSCShip|Pillar of Autumn}} to Threshold, and, [[Battle of Installation 04|in a series of events]], Installation 04 was destroyed.{{Ref/Level|CE|The Maw}} Many pieces of debris from Installation 04 were pulled into Threshold's gravity well, or its moon Basis, and destroyed.{{Ref/Anthology|Id=TML|Evo|Story=The Mona Lisa}}{{Ref/Map|H2|Burial Mounds}} | In [[2552]], the [[Fleet of Particular Justice]] followed the {{UNSCShip|Pillar of Autumn}} to Threshold, and, [[Battle of Installation 04|in a series of events]], Installation 04 was destroyed.{{Ref/Level|CE|The Maw}} Many pieces of debris from Installation 04 were pulled into Threshold's gravity well, or its moon Basis, and destroyed.{{Ref/Anthology|Id=TML|Evo|Story=The Mona Lisa}}{{Ref/Map|H2|Burial Mounds}}<ref>[https://www.halowaypoint.com/en-us/universe/locations/halo-ring-fragment '''Halo Waypoint''': ''Alpha Shard'']</ref> In the [[skirmish over Threshold]] after the ring's destruction, [[Cortana]] was able to jump into [[slipspace]] with the Covenant {{Pattern|Ruma|light carrier}} ''[[Ascendant Justice]]'' while in Threshold's atmosphere.<ref>'''Halo: First Strike''', ''page 114'' (2010)</ref> | ||
During the battle, the Covenant dispatched an artifact retrieval group led by [[Sesa 'Refumee]] to one of the gas mining platforms in Threshold's atmosphere.{{Ref/Book|Enc09|Page=243}} After Halo's destruction, the installation's monitor, [[343 Guilty Spark]], traveled to the gas mine and edified 'Refumee on the true nature of the Halos. Convinced that the [[Covenant religion]] was false, 'Refumee and his troops rebelled against the Prophets and were branded [[Sesa 'Refumee's heretic faction|heretics]] as a result.{{Ref/Game|CEA|Detail=[[Terminal (Halo: Combat Evolved Anniversary)|Terminal 11]]}} The newly-appointed [[Arbiter]], [[Thel 'Vadam]]ee, and a [[Covenant Special Operations]] contingent were dispatched to silence the heretics; at the conclusion of the [[Raid on the Threshold gas mine|resulting conflict]], the gas mine was dropped into Threshold's depths. ''[[High Charity]]'' and [[High Charity defense fleet|its fleet]] briefly visited Threshold as well, until they [[Slipstream space|jumped]] to [[Installation 05]].{{Ref/Level|Id=arbiter|H2|The Arbiter}} | During the battle, the Covenant dispatched an artifact retrieval group led by [[Sesa 'Refumee]] to one of the gas mining platforms in Threshold's atmosphere.{{Ref/Book|Enc09|Page=243}} After Halo's destruction, the installation's monitor, [[343 Guilty Spark]], traveled to the gas mine and edified 'Refumee on the true nature of the Halos. Convinced that the [[Covenant religion]] was false, 'Refumee and his troops rebelled against the Prophets and were branded [[Sesa 'Refumee's heretic faction|heretics]] as a result.{{Ref/Game|CEA|Detail=[[Terminal (Halo: Combat Evolved Anniversary)|Terminal 11]]}} The newly-appointed [[Arbiter]], [[Thel 'Vadam]]ee, and a [[Covenant Special Operations]] contingent were dispatched to silence the heretics; at the conclusion of the [[Raid on the Threshold gas mine|resulting conflict]], the gas mine was dropped into Threshold's depths. ''[[High Charity]]'' and [[High Charity defense fleet|its fleet]] briefly visited Threshold as well, until they [[Slipstream space|jumped]] to [[Installation 05]].{{Ref/Level|Id=arbiter|H2|The Arbiter}} | ||
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===Post-Covenant War=== | ===Post-Covenant War=== | ||
After the Human-Covenant War, a 500 light-second exclusion zone was established around Threshold, with both [[Sangheili]] and human warships patrolling the region as part of the [[Treaty of 2552|post-war treaty]] between those species. Uncontrolled [[Sentinel]]s, volatile Halo fragments, micro-debris, malfunctioning Forerunner artifacts, and the ever-present danger of the Flood made even surreptitious exploration and scavenging too dangerous for most. In [[2556]], [[Fireteam Apollo]] was secretly deployed to the exclusion zone as part of [[Operation: SHELL GAME]]. | After the Human-Covenant War, a 500 light-second exclusion zone was established around Threshold, with both [[Sangheili]] and human warships patrolling the region as part of the [[Treaty of 2552|post-war treaty]] between those species. Uncontrolled [[Sentinel]]s, volatile Halo fragments, micro-debris, malfunctioning Forerunner artifacts, and the ever-present danger of the Flood made even surreptitious exploration and scavenging too dangerous for most. In [[2556]], [[Fireteam Apollo]] was secretly deployed to the exclusion zone as part of [[Operation: SHELL GAME]].<ref>'''[[Halo Legendary Crate]]''', ''[[Halo Legendary Crate/Data Drops|Data Drop #3]]''</ref> One of Threshold's gas mines is the location of a [[War Games]] [[Colossus (map)|simulation]], a favorite among [[Spartan Operations|Spartan]] fireteam leaders.{{Ref/Reuse|universe}} | ||
==Description== | ==Description== | ||
===Composition and atmosphere=== | ===Composition and atmosphere=== | ||
[[File:H2A - Threshold gas mine.jpg|thumb|250px|A raging storm near a gas mine in Threshold's upper atmosphere.]] | [[File:H2A - Threshold gas mine.jpg|thumb|250px|A raging storm near a gas mine in Threshold's upper atmosphere.]] | ||
Threshold is an immense gas giant with a diameter of {{Convert|214604|km|mi}}, and twelve satellites, several of which are Forerunner installations. Threshold is the largest planet in the [[Soell system]], and the seventh planet in Soell's orbit.{{Ref/Reuse|vis}} Threshold is purplish-orange in color,{{Ref/Novel|TF|Chapter=1}} and contains many rare and valuable gases.{{Ref/Reuse|ENC310}} Threshold's atmosphere is made up of white [[ammonia]] clouds, amber-colored [[wikipedia:Ammonium hydrosulfide|ammonium hydrosulfide]] clouds, [[phosphorus]] compounds, ice crystals and other gases. The clouds are arranged in thin, tendril-like formations and resemble sinuous ribbons.{{Ref/Reuse|atmo}} The planet's winds blow at hundreds of kilometers an hour. Threshold is known to have storms frequently rage in its atmosphere similar to the storms that occur on the planet [[Jupiter]].{{Ref/Reuse|arbiter}}{{Ref/Reuse|oracle}}{{Ref/Reuse|TML}} The planet has a core of liquid hydrogen.{{Ref/Level|H2|The Oracle|Quote=The Flood will not survive once this mine enters the planet's liquid hydrogen core. Then again, neither will we. What a | Threshold is an immense gas giant with a diameter of {{Convert|214604|km|mi}}, and twelve satellites, several of which are Forerunner installations. Threshold is the largest planet in the [[Soell system]], and the seventh planet in Soell's orbit.{{Ref/Reuse|vis}} Threshold is purplish-orange in color,{{Ref/Novel|TF|Chapter=1}} and contains many rare and valuable gases.{{Ref/Reuse|ENC310}} Threshold's atmosphere is made up of white [[ammonia]] clouds, amber-colored [[wikipedia:Ammonium hydrosulfide|ammonium hydrosulfide]] clouds, [[phosphorus]] compounds, ice crystals and other gases. The clouds are arranged in thin, tendril-like formations and resemble sinuous ribbons.{{Ref/Reuse|atmo}} The planet's winds blow at hundreds of kilometers an hour. Threshold is known to have storms frequently rage in its atmosphere similar to the storms that occur on the planet [[Jupiter]].{{Ref/Reuse|arbiter}}{{Ref/Reuse|oracle}}{{Ref/Reuse|TML}} The planet has a core of liquid hydrogen.{{Ref/Level|H2|The Oracle|Quote=The Flood will not survive once this mine enters the planet's liquid hydrogen core. Then again, neither will we. What a pity...}} | ||
The pressure inside the gas giant is extremely powerful, and effectively able to crush any object that delves too deep into the planet's atmosphere. Threshold has a powerful magnetosphere that is easily capable of disrupting the magnetic fields of [[plasma weaponry]] such as [[plasma torpedo]]es. The temperature of the outer atmosphere of Threshold is around three hundred degrees Celsius.<ref>'''Halo: First Strike''', ''pages 101-102'' (2010)</ref> Further down, in the planet's denser atmosphere, temperatures reach over seventeen hundred degrees Celsius.<ref>'''Halo: First Strike''', ''page 107'' (2010)</ref> | The pressure inside the gas giant is extremely powerful, and effectively able to crush any object that delves too deep into the planet's atmosphere. Threshold has a powerful magnetosphere that is easily capable of disrupting the magnetic fields of [[plasma weaponry]] such as [[plasma torpedo]]es. The temperature of the outer atmosphere of Threshold is around three hundred degrees Celsius.<ref>'''Halo: First Strike''', ''pages 101-102'' (2010)</ref> Further down, in the planet's denser atmosphere, temperatures reach over seventeen hundred degrees Celsius.<ref>'''Halo: First Strike''', ''page 107'' (2010)</ref> | ||
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===Satellites=== | ===Satellites=== | ||
[[File:Installation 04 Terminal.jpg|thumb|250px|left|The orbiting Installation 04 and asteroids.]] | [[File:Installation 04 Terminal.jpg|thumb|250px|left|The orbiting Installation 04 and asteroids.]] | ||
Threshold is orbited by twelve satellites. Threshold's largest [[natural satellite]], is called [[Basis]]. The other satellites of Threshold are significantly smaller, but are nonetheless host to various [[Forerunner]] facilities.{{Ref/Reuse|vis}} Although none of Threshold's satellites have been extensively surveyed, all but two of them appear to contain Forerunner installations or are entirely artificial. The outposts functions are unknown, but they were likely used to provide maintenance for [[Installation 04]].{{Ref/Reuse| | Threshold is orbited by twelve satellites. Threshold's largest [[natural satellite]], is called [[Basis]]. The other satellites of Threshold are significantly smaller, but are nonetheless host to various [[Forerunner]] facilities.{{Ref/Reuse|vis}} Although none of Threshold's satellites have been extensively surveyed, all but two of them appear to contain Forerunner installations or are entirely artificial. The outposts functions are unknown, but they were likely used to provide maintenance for [[Installation 04]].{{Ref/Reuse|universe}} Several small [[asteroid]]s also orbit Threshold, near Installation 04.{{Ref/Game|CEA|Detail=[[Terminal (Halo: Combat Evolved Anniversary)|Terminal 7]]}} | ||
The most notable of Threshold's orbiting installations was Installation 04, situated at the L<sub>1</sub> [[Lagrange point]] between Threshold and Basis.{{Ref/Reuse| | The most notable of Threshold's orbiting installations was Installation 04, situated at the L<sub>1</sub> [[Lagrange point]] between Threshold and Basis.{{Ref/Reuse|universe}} Threshold's atmosphere is home to an extensive network of Forerunner [[Threshold gas mine|gas mining platforms]] and refinery stations, hanging from a band-like low-orbital suspension grid in the upper atmosphere.{{Ref/Reuse|vis}}{{Ref/Reuse|gasmine}} Although, by the mid-26th century, only a handful of these mines and refineries remain operational.{{Ref/Reuse|universe}} The Forerunner space station designated [[Deep-Space Anomaly 0198]] by the UNSC is also in high orbit over the gas giant.{{Ref/Map|CE|Derelict}} | ||
{{Clear}} | {{Clear}} | ||
==Trivia== | ==Trivia== | ||
{{Linkbox|gallery=yes}} | {{Linkbox|gallery=yes}} | ||
*Threshold is described as purple in the book, ''[[Halo: The Flood]]'', though throughout ''[[Halo: Combat Evolved]]'' and ''[[Halo 2]]'', it is only shown as orange. Also, the planet is depicted as being light blue in the motion comic adaptation of ''[[The Mona Lisa]]''. | *Threshold is described as purple in the book, ''[[Halo: The Flood]]'', though throughout ''[[Halo: Combat Evolved]]'' and ''[[Halo 2]]'', it is only shown as orange. Also, the planet is depicted as being light blue in the motion comic adaptation of ''[[The Mona Lisa]]''.<ref name="SDCC">[http://www.youtube.com/watch?v=8bEMmNEHbr0 '''YouTube''': ''SDCC: Halo Universe Panel (Part 5)'']</ref> This may be caused by the position of the system's sun at different times or the proximity to the gas giant, or may simply be an oversight. | ||
*In ''[[Halo: Combat Evolved]]'', ''[[Halo 2]]'' and most other visual media, Threshold's surface texture resembles that of a terrestrial world more than a conventional gas giant. The planet's appearance is revised in ''[[Halo 2: Anniversary]]'' to more accurately reflect its nature, with its face now covered in latitudinal cloud bands characteristic of gas giants. The same is true with ''[[Halo 5: Guardians]]'' on the maps ''[[Paralax]]'' and ''[[Truth]]''. | *In ''[[Halo: Combat Evolved]]'', ''[[Halo 2]]'' and most other visual media, Threshold's surface texture resembles that of a terrestrial world more than a conventional gas giant. The planet's appearance is revised in ''[[Halo 2: Anniversary]]'' to more accurately reflect its nature, with its face now covered in latitudinal cloud bands characteristic of gas giants. The same is true with ''[[Halo 5: Guardians]]'' on the maps ''[[Paralax]]'' and ''[[Truth]]''. | ||
*In ''Halo: Combat Evolved'', the [[MA5B assault rifle|assault rifle]]'s compass arrow points at the gas giant. This suggests that Threshold's atmosphere contains a large amount of iron particles, or that the assault rifles use a digital compass and that the Alpha Halo happens to be situated so that Threshold is aligned with the rifle's north during the events of the game. | *In ''Halo: Combat Evolved'', the [[MA5B assault rifle|assault rifle]]'s compass arrow points at the gas giant. This suggests that Threshold's atmosphere contains a large amount of iron particles, or that the assault rifles use a digital compass and that the Alpha Halo happens to be situated so that Threshold is aligned with the rifle's north during the events of the game. | ||
* Microsoft's Windows 10 operating system is codenamed Threshold, after the planet in the Halo franchise. | * Microsoft's Windows 10 operating system is codenamed Threshold, after the planet in the Halo franchise.<ref name="ZDNet">[http://www.zdnet.com/article/microsoft-codename-threshold-the-next-major-windows-wave-takes-shape/ '''ZDNet''': ''Microsoft codename Threshold: The next major Windows wave takes shape'']</ref> Threshold joins Project Spartan and Cortana as references to the Halo franchise in the Windows 10 release. | ||
==Gallery== | ==Gallery== | ||
