History ApocalypseHow / ClassX

* Adam Warren's adaptation of the ''Literature/DirtyPair'' revealed that the Earth had been destroyed decades earlier in a massive GreyGoo outbreak, the "Nanoclysm", which led to nanotechnology being regulated and virtually outlawed. The villain of the miniseries planned to use a cache of nanotech to take over HeroesRUs's Central Computer, and from there, the known universe. (Unfortunately, the Central Computer revealed that it was partially based on something the Nanoclysm left humanity as an apology...)
* Narrowly averted in a ''ComicBook/DisneyDucksComicUniverse'' story about [[HollywoodAcid the Universal Solvent]], which dissolves everything except diamonds and does not dissipate. When it's poured to the ground, it's going to [[MinovskyPhysics keep dissolving]] the planet from within unless the heroes recapture it with a diamond-lined container.

** ''ComicBook/NewKrypton'' ends with the eponymous planet exploding, and the whole Kryptonian race becoming nearly extinct ''again''.
** ''ComicBook/TheUntoldStoryOfArgoCity'': In an off-panel adventure, Superman and Supergirl saved an alien world from being destroyed by its exploding sun.

** ''ComicBook/ThePhantomZone'': Wegthor, one of the Moons of Krypton, was accidentally destroyed by an experimental missile.

** "ComicBook/SupermanAndSpiderMan": Doctor Doom develops a new kind of fusion reactor which produces abundant clean energy. Unfortunately, the core is very unstable and is building towards an explosion that will atomize Earth unless someone find a way to stop it.

** "ComicBook/LuthorUnleashed": A battle between Superman and Luthor and an energy blast badly aimed causes the core of planet Lexor to detonate, turning Lexor into flaming debris.

* ''Film/CabinInTheWoods'' ends with the giant magma hand of an Ancient One emerging from the ground and slamming down over the [[CameraAbuse camera]].

* Too many [[Franchise/MarvelUniverse Marvel]] and [[Franchise/TheDCU DC]] Comics plotlines to count.

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** [[Recap/DoctorWhoS30E13JourneysEnd "Journey's End"]]: Martha planned to use the Osterhagen Key to blow the Earth up with strategically-placed nukes so that the Daleks couldn't go through with the death of reality itself.

** Samus causes Dark Aether to be destroyed when she takes the final energy from the Ing in ''VideoGame/MetroidPrime2Echoes''. The inverse almost happened at the start of the game where the Ing was on the verge of acquiring the final energy from Aether, which would have caused that planet to blow up instead had Samus not arrived on time.
** And of course Phaaze in ''[[VideoGame/MetroidPrime Metroid Prime 3]]'' goes boom, [[MikeNelsonDestroyerOfWorlds thanks to Samus.]] Hey, it was aiming for multiple Class 2 catastrophes anyway due to TheCorruption, so she beat it to the punch!

* Adam Warren's adaptation of the ''LightNovel/DirtyPair'' revealed that the Earth had been destroyed decades earlier in a massive GreyGoo outbreak, the "Nanoclysm", which led to nanotechnology being regulated and virtually outlawed. The villain of the miniseries planned to use a cache of nanotech to take over HeroesRUs's Central Computer, and from there, the known universe. (Unfortunately, the Central Computer revealed that it was partially based on something the Nanoclysm left humanity as an apology…)

* Has happened to Earth [[GroundhogDayLoop thousands of times over]] in ''Anime/ShinMazingerZero'', courtesy of said Mazinger awakening.

** Using a World Cracker Colossus will permanently destroy a planet. [[EveryoneHasStandards There is a good reason for why using this weapon will infuriate basically every other empire in the galaxy]] (unless [[GodzillaThreshold the target is a crisis faction]]).

** Using a World Cracker Colossus will permanently destroy a planet. [[EveryoneHasStandards There is a good reason for why using this weapon will infuriate basically every other empire in the galaxy]] (Unless [[GodzillaThreshold the target is a crisis faction]]).

** Using a World Cracker Colossus will permanently destroy a planet. [[EveryoneHasStandards There is a good reason for why using this weapon will infuriate basically every other empire in the galaxy]] (Unless [[GodzillaThreshold the target is a crisis faction]].

* ''WesternAnimation/FinalSpace'': [[spoiler:Earth]] seemingly suffered this at the end of Season 1 [[spoiler:when it was physically dragged into Final Space by one of the [[EldritchAbomination Titans]]]], but in Season 3 it gets downgraded to a ApocalypseHow/Class4]]. In Season 3, [[spoiler: Earth is destroyed completely in an EarthShatteringKaboom when the Lord Commander [[FusionDance fuses with the Titan embryo]] [[OneWingedAngel incubating in the planet's core]] and bursts out]].

** In ''Film/StarTrek2009'', [[spoiler:[[BigBad Nero]] destroys Vulcan by using Red Matter to create a black hole inside it, with the crew of The Enterprise stopping him before he can do the same to Earth]].

* Various incarnations of ''Franchise/TheHitchhikersGuideToTheGalaxy'' have the Vogons do this to Earth, ostensibly to make way for a hyperspacial express route, though it's really because [[spoiler:Earth is calculating the Ultimate Question, and would put all the psychoanalysts in the universe out of business if it finished]]. In the novel ''Literature/MostlyHarmless'', [[spoiler: the Vogons finally succeed in destroying not just Earth, but every version of Earth across all the infinite parallel realities]]. Creator/DouglasAdams [[SecondLawOfMetafictionalThermodynamics was in a very bad mood when he wrote that one.]]

* ''Franchise/{{Superman}}'':

Planetary-scale Physical Annihilation. There used to be a planet here. There isn't anymore; it's ''gone''.

* Various incarnations of ''Franchise/TheHitchhikersGuideToTheGalaxy'' have the Vogons do this to Earth, ostensibly to make way for a hyperspacial express route, though it's really because [[spoiler:Earth is calculating the Ultimate Question, and would put all the psychoanalysts in the universe out of business if it finished]]. In the novel ''Literature/MostlyHarmless'', [[spoiler: the Vogons finally succeed in destroying not just Earth, but every version of Earth across all the infinite parallel realities]]. Douglas Adams was in a very bad mood when he wrote that one.

* ''Fanfic/BecomingATrueInvader'': After having previously suffered a Class 3 when [[BigBad the Employer's]] army invaded and [[KillEmAll wiped out every Irken]] except for the Tallest, Zim, Skoodge, and Tak, Irk is completely destroyed when the Employer's interdimensional portal malfunctions and creates a black hole which swiftly consumes the planet.

* The second season finale of ''WesternAnimation/StarTrekLowerDecks'' shows most of [[spoiler:Pakled Planet]] has been reduced to a huge crater by [[spoiler:a varruvium bomb. The Pakleds probably did it to themselves by accident (and were planning on doing the same to Earth), but for reasons yet to be revealed, Capt. Freeman is falsely blamed and arrested by Starfleet]].