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{{ | {{Status|Canon}} | ||
{{ | {{Wikipedia}} | ||
[[File:Atomicblast.jpg|thumb|250px|An atomic blast.]] | [[File:Atomicblast.jpg|thumb|250px|An atomic blast.]] | ||
A '''nuclear weapon''' is a type of ordnance using [[nuclear fission]] and/or [[Nuclear fusion|fusion]] as a source of energy. The yield of a nuclear weapon is measured in the amount of tons of "[[wikipedia:Trinitrotoluene|TNT]]" needed to generate an explosion of similar proportions. | A '''nuclear weapon''' is a type of ordnance using [[nuclear fission]] and/or [[Nuclear fusion|fusion]] as a source of energy. The yield of a nuclear weapon is measured in the amount of tons of "[[wikipedia:Trinitrotoluene|TNT]]" needed to generate an explosion of similar proportions. | ||
==Overview== | ==Overview== | ||
The UNSC uses nuclear weapons in space warfare | Nuclear weapons are commonplace in the [[United Nations Space Command]]'s arsenal and in select [[civilian]] uses. The UNSC uses nuclear weapons to great effect in [[space warfare]], increasing their effectiveness with special payloads enhanced for vacuum use.<ref>'''Halo: Ghosts of Onyx''', "Chapter 35" ''page 326''</ref> Throughout the [[Insurrection]] and early on in the [[Human-Covenant War]], space-borne UNSC nuclear weapons used proximity-fused warheads that relied on the detonation's direct radiation and thermal shock, which quickly proved ineffective against [[Covenant]] warships' [[energy shielding]]. As a result, the UNSC developed new types of warheads sporting [[Wikipedia:Nuclear pumped laser|nuclear-pumped]] X-ray lasers<ref name="warfleet 16">''[[Halo: Warfleet]]'', p. 16</ref> and Casaba Howitzer-type shaped-charge warheads known as "Spears", which focus the nuclear blast into a directed, relativistic plasma jet.<ref>''Halo: Warfleet'', p. 92</ref> Conventional nuclear weapons are still used in [[planetary warfare]] as tools of last resort.{{Ref/Reuse|warfleet 16}} Some planetary nuclear weapons also have shaped-charge properties, such as the [[HAVOK tactical nuclear weapon#Mark 2550 MFDD|Mark 2550 Havok MFDD]], a bunker buster warhead designed to direct its blast against underground targets.<ref>'''Halo: Last Light''', ''page 364'' (Google Play edition)</ref> | ||
Nuclear weapons are also sold commercially, and are commonly used in [[asteroid]] mining. In [[ | Commonly, the casings of UNSC nuclear weapons such as the [[FENRIS nuclear warhead]]s are heavily reinforced, both to contain [[radiation]] and to boost the thermonuclear yield for containing the detonation for a split second longer.<ref>'''Halo: Ghosts of Onyx''', "Chapter 1", ''page 39''</ref> The hardened cases also protect the nukes inside and prevent them from going off accidentally - it was noted that detonating a bomb next to a FENRIS warhead would barely scratch the casing.<ref>'''Halo: Ghosts of Onyx''', "Chapter 23", ''page 209''</ref> There are various grades for the types of nuclear weapons. An example is the excavation-grade [[HAVOK tactical nuclear weapon]]. While presumably not as powerful as a military-grade weapon, a single warhead is described as being powerful enough to turn [[Ivanoff Station]] "into piñata" and was powerful enough to destroy ''[[Mantle's Approach]]'' and the [[Composer]] when detonated on the inside of the ship. | ||
Nuclear weapons are also sold commercially, and are commonly used in [[asteroid]] mining. In [[2511]], an Insurrectionist suicide bomber used one such commercial explosive in a [[terrorism|terrorist]] attack on the [[Haven arcology]] on [[Mamore]], killing two million and injuring over eight million more.<ref>'''[[Intersystem News]]''': ''HAVEN TERROR BOMBING KILLS TWO MILLION''</ref> | |||
An operational idiosyncrasy of nuclear weapons is the result of containing fissile material. Fissile materials, such as [[plutonium]], emit a readily detectable [[Čerenkov radiation]] signature upon exiting [[slipspace]] that negates stealth measures. As a result, if complete stealth is required, [[UNSC prowler|prowlers]] are forced to jettison any on-board nuclear weapons before transitioning back to normal space to avoid detection.<ref name="goo187">'''Halo: Ghosts of Onyx''', "Chapter 22", ''page 187''</ref> In addition, nukes launched from slipspace can easily be detected by enemy sensors, despite the use of [[Stealth ablative coating|stealth coatings]] or [[lead]] linings.<ref>'''Halo: Ghosts of Onyx''', "Prologue", ''page 15''</ref> | An operational idiosyncrasy of nuclear weapons is the result of containing fissile material. Fissile materials, such as [[plutonium]], emit a readily detectable [[Čerenkov radiation]] signature upon exiting [[slipspace]] that negates stealth measures. As a result, if complete stealth is required, [[UNSC prowler|prowlers]] are forced to jettison any on-board nuclear weapons before transitioning back to normal space to avoid detection.<ref name="goo187">'''Halo: Ghosts of Onyx''', "Chapter 22", ''page 187''</ref> In addition, nukes launched from slipspace can easily be detected by enemy sensors, despite the use of [[Stealth ablative coating|stealth coatings]] or [[lead]] linings.<ref>'''Halo: Ghosts of Onyx''', "Prologue", ''page 15''</ref> | ||
The [[energy shielding]] used in [[Covenant]] warships has been noted to dampen the [[electromagnetic pulse]] generated by the detonation of a nuke inside the ship. The [[SPARTAN-II program|SPARTAN-IIs]] used this to their advantage when they destroyed a [[Covenant cruiser at Longhorn Valley|Covenant cruiser]] during the [[Fall of Reach]], without risking damaging the nearby [[orbital defense generator]]s.<ref>'''Halo: First Strike''', "Chapter 3", ''page 25''</ref> | The [[energy shielding]] used in [[Covenant]] warships has been noted to dampen the [[electromagnetic pulse]] generated by the detonation of a nuke inside the ship. The [[SPARTAN-II program|SPARTAN-IIs]] used this to their advantage when they destroyed a [[Covenant cruiser at Longhorn Valley|Covenant cruiser]] during the [[Fall of Reach]], without risking damaging the nearby [[orbital defense generator]]s.<ref>'''Halo: First Strike''', "Chapter 3", ''page 25''</ref> | ||
If nuclear arsenals are not available, especially during a situation where [[NOBLE Team]] needed one to destroy a {{Pattern|Sh'wada|supercarrier}}, one alternative is to use a [[Shaw-Fujikawa Translight Engine|Slipspace Drive]] in lieu of nuclear weaponry. | |||
==History== | ==History== | ||
The first space-borne nuclear weapons were used during the [[Interplanetary War]] in the 22nd century.<ref>'''Halo 4: The Essential Visual Guide''', ''page 74''</ref> However, they were not considered a viable weapon of space warfare for the next several hundred years; at the time of the start of the [[Insurrection]] in [[2494]] it was widely believed that fissile detonations in space were practically useless, as the vacuum of space severely reduces the explosive yield and the resulting [[electromagnetic pulse]]. As such, it came as a surprise to the UNSC when the [[Insurrectionist]]s used a nuclear device in a space battle following the [[Callisto Incident|''Callisto'' Incident]], having hidden it in an [[asteroid]] in advance. When detonated, the nuke shattered the asteroid to molten pieces, which in turn destroyed one UNSC ship and severely damaged two.<ref>'''Halo: Evolutions - Essential Tales of the Halo Universe''', "The Impossible Life and the Possible Death of Preston J. Cole", ''page 445''</ref> | [[File:HWF Longsword Nukes.png|thumb|250px|Nuclear weapons carried by a [[GA-TL1 Longsword]].{{Ref/Reuse|warfleet 16}}]] | ||
The first space-borne nuclear weapons were used during the [[Interplanetary War]] in the 22nd century.<ref>'''Halo 4: The Essential Visual Guide''', ''page 74''</ref> However, they were not considered a viable weapon of space warfare for the next several hundred years; at the time of the start of the [[Insurrection]] in [[2494]] it was widely believed that fissile detonations in space were practically useless, as the vacuum of space severely reduces the explosive yield and the resulting [[electromagnetic pulse]]. As such, it came as a surprise to the UNSC when the [[Insurrectionist]]s used a nuclear device in a space battle following the [[Callisto Incident|''Callisto'' Incident]], having hidden it in an [[asteroid]] in advance. When detonated, the nuke shattered the asteroid to molten pieces, which in turn destroyed one UNSC ship and severely damaged two more.<ref>'''Halo: Evolutions - Essential Tales of the Halo Universe''', "The Impossible Life and the Possible Death of Preston J. Cole", ''page 445''</ref> The Jiralhanae used nuclear weapons during their [[First Immolation|global civil war]] to such a degree that it set their species back hundreds of years.<ref>'''[[Halo: Envoy]]''', ''page 42''</ref> | |||
Engagements against the [[Covenant]] during the [[Human-Covenant War]] constantly kept the UNSC's nuclear stockpiles near depletion. This occasionally forced them to resort to using obsolete nukes or [[Operation: UPPER CUT|unorthodox solutions]].<ref name="goo34">'''Halo: Ghosts of Onyx''', "Chapter 1", ''page 34''</ref><ref name="goo205">'''Halo: Ghosts of Onyx''', "Chapter 23", ''page 205''</ref><ref>'''Halo: Reach''', campaign level ''[[Long Night of Solace]]''</ref> | Engagements against the [[Covenant]] during the [[Human-Covenant War]] quickly proved conventional nuclear weapons' ineffectiveness against Covenant warships' shields, forcing the UNSC to develop more effective payloads.{{Ref/Reuse|warfleet 16}} The frequent deployment of nuclear weapons in space engagements constantly kept the UNSC's nuclear stockpiles near depletion. This occasionally forced them to resort to using obsolete nukes or [[Operation: UPPER CUT|unorthodox solutions]].<ref name="goo34">'''Halo: Ghosts of Onyx''', "Chapter 1", ''page 34''</ref><ref name="goo205">'''Halo: Ghosts of Onyx''', "Chapter 23", ''page 205''</ref><ref>'''Halo: Reach''', campaign level ''[[Long Night of Solace]]''</ref> | ||
The Covenant did not generally use nuclear weapons, regarding them as "heretic" weapons. An exception to this were the [[Jiralhanae]], who had no qualms about using captured UNSC nukes or any other UNSC matériel.<ref>'''Halo: Ghosts of Onyx''', "Chapter 23", ''page 207''</ref><ref>'''[[Halo 2]]''', campaign level ''[[Uprising]]''</ref> However, following the end of the war, [[Covenant remnants|remnant groups]] of the Covenant have adopted more liberal policies in regards to human weaponry for practical reasons. Human-made nuclear weapons have subsequently fallen into the hands of Covenant [[terrorism|terrorists]] and cultists.<ref>'''Spartan Ops''', ''[[Departure]]''</ref> | The Covenant did not generally use nuclear weapons, regarding them as "heretic" weapons. An exception to this were the [[Jiralhanae]], who had no qualms about using captured UNSC nukes or any other UNSC matériel.<ref>'''Halo: Ghosts of Onyx''', "Chapter 23", ''page 207''</ref><ref>'''[[Halo 2]]''', campaign level ''[[Uprising]]''</ref> However, following the end of the war, [[Covenant remnants|remnant groups]] of the Covenant have adopted more liberal policies in regards to human weaponry for practical reasons. Human-made nuclear weapons have subsequently fallen into the hands of Covenant [[terrorism|terrorists]] and cultists.<ref>'''Spartan Ops''', ''[[Departure]]''</ref> | ||
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===FENRIS nuclear warhead=== | ===FENRIS nuclear warhead=== | ||
{{Main|FENRIS nuclear warhead}} | {{Main|FENRIS nuclear warhead}} | ||
The '''FENRIS''' is a type of low-yield thermonuclear device. They were slated for decommissioning but munition expenditures during the [[Human-Covenant War]] saw the survivors return to service. | The '''FENRIS''' is a type of low-yield thermonuclear device. They were slated for decommissioning but munition expenditures during the [[Human-Covenant War]] saw the survivors return to service.{{Ref/Reuse|goo34}}{{Ref/Reuse|goo205}}<ref>'''Halo: Ghosts of Onyx''', "Chapter 24", ''page 215''</ref> | ||
===Fury tactical nuclear weapon=== | ===Fury tactical nuclear weapon=== | ||
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===HAVOK tactical nuclear weapon=== | ===HAVOK tactical nuclear weapon=== | ||
{{Main|HAVOK tactical nuclear weapon}} | {{Main|HAVOK tactical nuclear weapon}} | ||
'''HAVOK''' is a series of 30 megaton thermonuclear devices, which come in various configurations. Some were delivered by ground forces during the Human-Covenant War.<ref>'''Halo: The Fall of Reach''', ''page 200''</ref><ref>'''Halo: The Fall of Reach''', ''page 212''</ref><ref>'''Halo Wars: Genesis''', ''page 17''</ref> One was used to destroy the [[Composer]] and the ''[[Mantle's Approach]]'', stopping the [[Ur-Didact|Didact]]'s [[New Phoenix Incident|assault on Earth]]. Due to its many variants, it appears to be one of the most commonly used nuclear weapons. | |||
===HORNET mine=== | ===HORNET mine=== | ||
{{Main|HORNET mine}} | {{Main|HORNET mine}} | ||
The '''HORNET''' is a 30 megaton space mine. The devices are designed to be more stealthy than an ordinary nuke and are carried aboard [[UNSC prowler]]s. Although like all nuclear weapons, they can be easily detected when exiting slipspace, | The '''HORNET''' is a 30 megaton space mine. The devices are designed to be more stealthy than an ordinary nuke and are carried aboard [[UNSC prowler]]s. Although like all nuclear weapons, they can be easily detected when exiting slipspace,{{Ref/Reuse|goo187}} they can be rendered practically undetectable by cooling them to near-absolute zero temperatures, same as that of interstellar space, in their launch chambers.<ref>'''Halo: Ghosts of Onyx''', ''page 325''</ref> | ||
===NOVA bomb=== | ===NOVA bomb=== | ||
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===Shiva-class nuclear missile=== | ===Shiva-class nuclear missile=== | ||
{{Main|Shiva-class nuclear missile}} | {{Main|Shiva-class nuclear missile}} | ||
The '''Shiva''' is a type of starship ordnance.<ref>'''[[Halo: The Fall of Reach]]''', ''pages 147, 322-324''</ref><ref>'''Halo: The Cole Protocol''', ''page 82''</ref> They may also be carried by [[GA-TL1 Longsword]]s.<ref>'''[[Halo Encyclopedia|Halo Encyclopedia (2011)]]''', ''page 320''</ref> | The '''Shiva''' is a type of starship ordnance.<ref>'''[[Halo: The Fall of Reach]]''', ''pages 147, 322-324''</ref><ref>'''Halo: The Cole Protocol''', ''page 82''</ref> They may also be carried by [[GA-TL1 Longsword]]s.<ref>'''[[Halo Encyclopedia (2009 edition)|Halo Encyclopedia: The Definitive Guide to the Halo Universe (2011)]]''', ''page 320''</ref> | ||
===Rudra-class nuclear missile=== | ===Rudra-class nuclear missile=== | ||
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===Hyperion-class nuclear missile=== | ===Hyperion-class nuclear missile=== | ||
{{Main|M4093 Hyperion nuclear delivery system}} | {{Main|M4093 Hyperion nuclear delivery system}} | ||
The Hyperion is a class of nuclear weapons shown to be carried by the {{UNSCShip|Forward Unto Dawn}} that is capable of destroying a | The Hyperion is a class of nuclear weapons shown to be carried by the {{UNSCShip|Forward Unto Dawn}} that is capable of destroying a {{Pattern|Zanar|light cruiser}} in one hit if its shields are down. | ||
==Gallery== | |||
<gallery> | |||
File:Fenris-class.jpg|An unidentified nuke used by [[Samuel-034]] to destroy the ''[[Unrelenting]]'' in ''[[Halo: Fall of Reach]]''. | |||
</gallery> | |||
==List of appearances== | ==List of appearances== | ||
{{Col-begin}} | |||
{{Col-2}} | |||
*''[[Halo: The Fall of Reach]]'' {{1st}} | *''[[Halo: The Fall of Reach]]'' {{1st}} | ||
*''[[Halo: The Flood]]'' | *''[[Halo: The Flood]]'' | ||
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*''[[Halo 2]]'' | *''[[Halo 2]]'' | ||
*''[[Halo: Ghosts of Onyx]]'' | *''[[Halo: Ghosts of Onyx]]'' | ||
*''[[Halo 3]] | |||
**''[[Heroic Map Pack]]'' | |||
*''[[Halo: Contact Harvest]]'' | *''[[Halo: Contact Harvest]]'' | ||
*''[[Halo 3: ODST]]'' {{ | *''[[Halo 3: ODST]]'' {{Mo}} | ||
*''[[Halo: Legends]]'' | *''[[Halo: Legends]]'' | ||
**''[[Origins]]'' | **''[[Origins]]'' | ||
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*''[[Remember Reach]]'' | *''[[Remember Reach]]'' | ||
**''[[Deliver Hope]]'' | **''[[Deliver Hope]]'' | ||
*''[[Halo: Reach]]'' {{ | *''[[Halo: Reach]]'' {{Mo}} | ||
*''[[Halo: Fall of Reach]]'' | *''[[Halo: Fall of Reach]]'' | ||
**''[[Halo: Fall of Reach - Covenant|Covenant]]'' | **''[[Halo: Fall of Reach - Covenant|Covenant]]'' | ||
{{Col-2}} | |||
*''[[Halo: Combat Evolved Anniversary]]'' | *''[[Halo: Combat Evolved Anniversary]]'' | ||
**''[[Terminal | **''[[Terminal (Halo: Combat Evolved Anniversary)|Terminals]]'' | ||
*''[[Halo: The Thursday War]]'' | *''[[Halo: The Thursday War]]'' | ||
*''[[Halo 4: Forward Unto Dawn]]'' | *''[[Halo 4: Forward Unto Dawn]]'' | ||
*''[[Halo 4]]'' | *''[[Halo 4]]'' | ||
**''[[Spartan Ops]]'' | **''[[Spartan Ops]]'' | ||
*''[[Halo: Escalation]]'' | |||
*''[[Halo: Nightfall]]'' | |||
*''[[Halo: Fractures]]'' | |||
**''[[Into the Fire]]'' {{mo}} | |||
*''[[Halo: Last Light]]'' | |||
*''[[Halo: Envoy]]'' | |||
*''[[Halo: Retribution]]'' | |||
*''[[Halo: Legacy of Onyx]]'' {{Mo}} | |||
*''[[Halo: Silent Storm]]'' | |||
*''[[Halo: Battle Born]]'' {{Mo}} | |||
*''[[Halo: Renegades]]'' | |||
*''[[Halo: Oblivion]]'' | |||
{{Col-end}} | |||
==Sources== | ==Sources== | ||
{{Ref/Sources|2}} | |||
[[Category:Nuclear weapons| ]] | |||
[[Category:Weapons]] | [[Category:Weapons]] | ||