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"I've read about devices like this. They were known in our vernacular as Stargate Destroyers; a last resort, break-glass-in-case-of-emergency weapon of mass destruction. The Ancients created them for the purpose of obliterating the stargate on another planet if the world in question became overrun by an unstoppable enemy" ― (SG1: Redemption, Part 2 (Cut dialogue))

Stargate destroyers are powerful devices built by the Ancients that are capable of completely destroying a Stargate on one planet via another Stargate on another planet. They work by transmitting large amounts of energy through one Stargate to another, causing the gate on the other side to overload and explode from absorbing more energy than it can contain.

Overview[]

Stargate destroyer 2

The shield preventing Teal'c and Master Bra'tac from entering the weapon.

The Stargate destroyer functions by projecting a high-intensity energy beam into the event horizon of an active, outgoing Stargate. The energy is transmitted through the wormhole to the other side. Rather than reintegrating on the receiving end, however, the energy is absorbed into the gate. As time passes, energy continues to build up in the naquadah of the receiving gate. Because of the large amounts of energy being fed into the gate, it is able to bypass the 38-minute limit that disconnects ordinary wormholes. Eventually, the energy buildup exceeds the capacity of the naquadah in the gate, causing it to explode with the force of a two to three thousand megaton bomb, enough to cause a disastrous effect on the environment that would wipe out all life on a planet the size of Earth.

The device consists of a large, two-pronged emitter positioned in front of the Stargate, from which the energy beam is generated. A tube or conduit extends from the emitter into the ground, indicating that part of the device is buried (as indicated by the collapse of the area around the emitter followed by a large underground explosion seconds after the emitter itself was destroyed). The emitter is surrounded by a ring of smaller obelisks connected by a separate energy beam, which can be seen to spin at a steady rate. The obelisks generate a forcefield preventing entry through the open areas; however, a single unshielded doorway, being two halves of a small obelisk, allows access to the device. The forcefield does not completely cover the device, only blocking ground access.

The devices origins are not made clear during the episodes it appears in nor why the Ancients would intentionally design such a device, though it was theorized that Anubis may simply have repurposed it to suit his needs, that the stargate destroyers were originally used by the Ancients to recharge the energy source of DHDs or that they had been constructed to bypass the 38 minute wormhole limit but abandoned because of the consequence of extended use similar to the Attero Device.

History[]

Stargate destroyer 1

The doorway through which Anubis's Jaffa entered and exited the device.

Anubis managed to locate the last operational device and used it in an attempt to destroy the Tau'ri. Earth was powerless to stop it, and had no means of reaching their offworld allies for assistance. Rodney McKay suggested using an Electromagnetic Pulse Generator to disable the device, but this failed to stop it.

Inspired by Jonas Quinn, Major Samantha Carter came up with the idea to fly the gate offworld using the X-302 hyperspace fighter. Using its hyperspace generator, the gate was flown to a safe distance and detonated harmlessly in space. Meanwhile, Rya'c, piloting a stolen Death Glider, was able to destroy the device. It is unknown if any attempts were made by Anubis to rebuild it, but is unlikely. (SG1: "Redemption, Part 1", "Redemption, Part 2")

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Ancient
Ancients AmaraAmara's motherAncient Med TechAtlasAurora CrewmanAurora GuardCaptain of AuroraCyla UrbanusHeliaHippaforalkusJanusJanus' assistantMorgan Le FayLilithMeliaMerlinOma DesalaOrlinChaya SarTrebalUnnamed Ancient maleVasi
Ancient outposts Antarctic outpostAsurasAthosAtlantisCamelotDaganDakaraDorandaDoranda outpostEarthHadanteHarmony's planetHeliopolisHeliopolis IIJanus' outpostJanus' research outpostLord Protector's PlanetM1M-316M7G-677PraxyonRuins of LarrisTaonasTaranisTaranis outpostVis Uban
Ancient technology Amplifier braceletAncient environmental suitAncient force fieldAncient freighterAncient hologramAncient hyperdriveAncient ligature deviceAncient maintenance robotAncient pressure suitAncient remote controlAncient seismic controllerAncient sensorAncient shieldAncient shuttle pulse weaponAncient stasis podAncient wallAnti-gravity shieldArthur's MantleAscendometerAscension machineAtlantis databaseAtlantis transporterAtlantis' shieldAttero deviceAttero device control keyAurora-class battleshipAncient beam transporterAtlantis biological sensorsBiometric sensor arrayCall forwarding deviceCentral data coreCharybdisCity-shipCO2 scrubberContainment vesselControl chairDestiny's shieldLantean control consoleLantean tabletControl interface hubAncient control panelCorrelative update systemLantean cruiserAncient crystal power cellDakara superweaponDalera's weaponAtlantis Desalination TanksDestinyDestiny AIDestiny interface chairDestiny pulse weaponDestiny shield emitterDestiny simulation programDial Home DeviceDimension observerDNA resequencerDrone weaponExogenesis deviceFaster-Than-Light engineAncient healing deviceInvisibility deviceKinoLagrangian Point satelliteLantean pulse weaponLantean stun weaponLife signs detectorLong range sensorsLong-range communication deviceLong-range communication stoneLantean medical scannerMobile drilling platformMolecular construction deviceNaniteNanite creation machinePersonal shield emitterPuddle JumperQuantum MirrorRepository of knowledgeSangraalSeed shipOrbital weaponStardriveStargateStargate destroyerStargate shieldTaranis' shieldTime loop machineAncient time machineTransportation ringsTumor creation deviceAtlantis underwater scannersWormhole driveZero Point Module
Terms Ancient contagionAncient languageAncient Technology Activation geneAscension
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Weapons
Assault Rifles Langaran assault rifleLucian Alliance assault rifleTagrean assault rifleTegalan assault rifle
Rifles Hoffan rifleSatedan military rifleTegalan rifle
Submachine Guns Genii semi-automatic machine gunLucian Alliance submachine gun
Shotgun Genii shotgun
Pistols Firearm (Cicero's people)Firearm (Elson's people)Firearm (People of P3R-118)Genii pistolGenii revolverJannick's revolverJayem Seran's pistolLangaran pistolLucian Alliance pistolNabel Golan's pistolPangaran firearmSatedan pistolTagrean pistolTegalan pistolVala Mal Doran's pistol
Rocket Launchers Lucian Alliance rocket launcher
Energy Weapons Altairan disintegratorAnkh weaponAsgard hand weaponAssassin Sniper's rifleAsuran pistolBedrosian rifleEurondan sidearmIntarLantean stun weaponMa'Tok staffMalakai's gunOdai Ventrell's pistolOranian pistolOri staff weaponOri stun weaponParticle magnumPlasma pistolSerrakin pistolSerrakin rifleStun rodT-46 Pulse BlasterTollan sidearmTogar's sidearmUnknown Alien weaponWraith handblasterWraith spear gunWraith stunner rifleZat'nik'tel
Explosives Genii explosive
Grenades Lucian Alliance stun grenadeShock grenadeThermal grenade
Mines Lucian Alliance mineTacluchnatagamuntoron
Missiles Tagrean missileTegalan missile
Ship based Asgard plasma beam weaponBedrosian cannonBerzerker drone energy weaponDestiny pulse weaponEnergy beam cannonHebridian energy weaponIon gunLaser cannonNakai energy weaponOri energy beam weaponOri pulse weaponPlasma chargeReplicator-controlled vessel energy weaponStaff cannonUnidentified spaceship energy weaponVanir energy weaponWraith energy weapon
Satellites Asuran Stargate satelliteLagrangian Point satelliteOri satelliteReplicator disruptor satellite
Other Weapons Asgard directed energy weaponDrone weaponHara'keshKara keshMini-droneMultiphasic blasterOrbital weaponPhase-shifting weaponReplicator disruptorReplicator disruptor cannonSangraalStargate destroyerTumor creation deviceTransphase Eradication RodWraith bombZa'tarc ring
Primitive Arkad's swordAxeBa'al's knifeBantos rodBlowgunBowCrossbowGenii knifeHammerInago's knifeJaffa knifeJavelinKestKiryk's shortswordKrantuMaceMichael's knifeOsiris' knifeOtho's knifeRonon's knifeRonon's swordShikra bladeSlingshotSora Tyrus' knifeSpearSwordTodd's knifeTraveler knifeTyre's swordWhipWraith Commander's sword
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