History Main / HollowWorld

6th Jan '18 6:52:28 PM WillKeaton
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* The closest (known) RealLife things to a hollow world are Saturn's moon [[https://en.wikipedia.org/wiki/Hyperion_(moon) Hyperion]], an irregularly shaped body that is said to have a 40% of its volume as empty space, and similar ''[[https://en.wikipedia.org/wiki/Rubble_pile rubble piles]]'' as Mars' largest moon Phobos.

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* The closest (known) RealLife things to a hollow world are Saturn's moon [[https://en.wikipedia.org/wiki/Hyperion_(moon) Hyperion]], Hyperion,]] an irregularly shaped body that is said to have a 40% of its volume as empty space, and similar ''[[https://en.wikipedia.org/wiki/Rubble_pile rubble piles]]'' as Mars' largest moon Phobos.
6th Jan '18 6:51:55 PM WillKeaton
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Note that its usual configuration, with people walking about on the inner surface, wouldn't work; a hollow sphere has ''no'' net gravitational pull on any object inside it (although some theorists, such as [[http://en.wikipedia.org/wiki/John_Cleves_Symmes,_Jr John Symmes]], claim that this actually ''could'' work due to the [[http://en.wikipedia.org/wiki/Centrifugal_force centrifugal force]] caused by the planet's rotation. However, it would still have to be very low, otherwise the planet itself would break apart [[note]] The centrifugal acceleration at Earth's equator is only 0.003g[[/note]]).

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Note that its usual configuration, with people walking about on the inner surface, wouldn't work; a hollow sphere has ''no'' net gravitational pull on any object inside it (although it. Although some theorists, such as [[http://en.wikipedia.org/wiki/John_Cleves_Symmes,_Jr John Symmes]], Symmes,]] claim that this actually ''could'' work due to the [[http://en.wikipedia.org/wiki/Centrifugal_force centrifugal force]] caused by the planet's rotation. However, it would still have to be very low, otherwise the planet itself would break apart [[note]] The apart.[[note]]The centrifugal acceleration at Earth's equator is only 0.003g[[/note]]).
003g.[[/note]]
6th Jan '18 6:50:52 PM WillKeaton
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So, mainstream scientists today believe that the Earth under our feet has a lot of molten rock and metal filling it and have gathered a lot of pretty solid evidence for it. The only complication is that we've never been able to send a human down more than several miles to actually study it up close, largely because NoOneCouldSurviveThat. Which is why since times that are OlderThanRadio, early scientists, writers and more than a few crackpots have believed that there just might be something... or indeed, someone (say, UltraTerrestrials)... down there, possibly powered by a suitably sized sun in the center.

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So, mainstream scientists today believe that the Earth under our feet has a lot of molten rock and metal filling it and have gathered a lot of pretty solid evidence for it. The only complication is that we've never been able to send a human down more than several miles to actually study it up close, largely because NoOneCouldSurviveThat. NoOneCouldSurviveThat Which is why since times that are OlderThanRadio, early scientists, writers and more than a few crackpots have believed that there just might be something... or indeed, someone (say, UltraTerrestrials)... down there, possibly powered by a suitably sized sun in the center.
22nd Oct '17 6:20:44 AM Malady
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* The city of Arkadia and the other "strata" in ''SpartakusAndTheSunBeneathTheSea''.

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* The city of Arkadia and the other "strata" in ''SpartakusAndTheSunBeneathTheSea''.''WesternAnimation/SpartakusAndTheSunBeneathTheSea''.
21st Oct '17 11:48:47 PM Xtifr
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Added DiffLines:

* In "[[Literature/MaureenBirnbaumBarbarianSwordsperson Maureen Birnbaum at the Earth's Core]]", Maureen travels to a world ''[[Literature/{{Pellucidar}} inside]]'' the Earth, where she is captured by giant white apes who make her their priestess.
19th Oct '17 3:57:51 AM SebastianGray
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* There is some mentions in the ''TabletopGame/Warhammer40000'' rulebook about hollow worlds.

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* There is some mentions in the ''TabletopGame/Warhammer40000'' rulebook background material about hollow worlds.worlds with the most prominent being the [[EternalEngine forge world]] Lucius. The interior surface of this wonder of [[TheEmpire the Imperium]] is covered by massive factories powered by an artificial sun of mysterious origin that sits at the planetís core.
19th Jul '17 11:11:17 AM Theriocephalus
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* In the ;;Literature/ArtemisFowl series;;, the Fairies moved to inside the HollowEarth in recent times -- that or BeneathTheEarth depending on how you interpret it.

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* In the ;;Literature/ArtemisFowl series;;, ''Literature/ArtemisFowl'' series, the Fairies moved to inside the HollowEarth in recent times -- that or BeneathTheEarth depending on how you interpret it.
18th Jul '17 6:23:43 PM Theriocephalus
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* The Hollow World is a ''TabletopGame/DungeonsAndDragons'' game setting inside another D&D game setting, being located inside the planet TabletopGame/{{Mystara}}.

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* ''TabletopGame/DungeonsAndDragons'':
**
The Hollow World is a ''TabletopGame/DungeonsAndDragons'' game setting inside another D&D game setting, being located inside the planet TabletopGame/{{Mystara}}.on which ''TabletopGame/{{Mystara}}'' is set, reachable by huge holes at the planetary poles. In-universe, it's used by Immortals (the gods of the setting) as a sort of ark for creatures and cultures that would have gone extinct in the surface world, including dinosaurs, Kogolor dwarves (the surface-dwelling pastoral ancestors of the more stereotypical main setting dwarves), beastmen (the bestial ancestors of evil humanoids like orcs, goblins and ogres) and advanced LizardFolk, with a few {{floating continent}}s for flavor.



** The ''World Builder's Guidebook'', a supplement for 2nd Edition D&D, discussed variant WorldShapes, including hollow worlds. Notably, it points out that the same blank globe-maps it provides for Earth-like spherical worlds are also perfectly usable for a hollow sphere.

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** The ''World Builder's Guidebook'', a supplement for 2nd Edition D&D, ''D&D'', discussed variant WorldShapes, including hollow worlds. Notably, it points out that the same blank globe-maps it provides for Earth-like spherical worlds are also perfectly usable for a hollow sphere.
18th Jul '17 6:09:20 PM Theriocephalus
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[[folder:Comicbooks]]

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[[folder:Comicbooks]][[folder:Comic Books]]



[[folder:Film - Animated]]

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[[folder:Film - -- Animated]]



[[folder:Film - Live Action]]

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[[folder:Film - -- Live Action]]



* ''Literature/ChooseYourOwnAdventure: The Underground Kingdom'', which had a star in the middle of the earth and an advanced civilization living inside of the crust.
** Likewise ''Through the Black Hole,'' in which the planets in the black hole appear to be spherical and smooth (and repel all other objects), but can be burrowed into with some difficultly to locate the lush wildlife and SufficientlyAdvancedAliens on the inside.
* Creator/OlafStapledon's ''Literature/StarMaker''.
* Creator/RobertSilverberg's ''Across a Billion Years''.
* Colin Kapp's ''Cageworld'' series.
* Bob Shaw's ''Orbitsville''.
* ''Farthest Star''
* ''Wall Around a Star''-- the inhabitants mainly lived on the ''outside'' of the Sphere (or in the various layers of the Dyson Shell).

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* ''Literature/ChooseYourOwnAdventure: The ''Literature/ChooseYourOwnAdventure'':
** ''The
Underground Kingdom'', which Kingdom'' had a star in the middle of the earth and an advanced civilization living inside of the crust.
** Likewise in ''Through the Black Hole,'' Hole'', in which the planets in the black hole appear to be spherical and smooth (and repel all other objects), but can be burrowed into with some difficultly to locate the lush wildlife and SufficientlyAdvancedAliens on the inside.
* %%* Creator/OlafStapledon's ''Literature/StarMaker''.
* %%* Creator/RobertSilverberg's ''Across a Billion Years''.
* %%* Colin Kapp's ''Cageworld'' series.
* %%* Bob Shaw's ''Orbitsville''.
* %%* ''Farthest Star''
* In ''Wall Around a Star''-- Star'', the inhabitants mainly lived on the ''outside'' of the Sphere (or in the various layers of the Dyson Shell).



* In the Literature/ArtemisFowl series, the Fairies moved to inside the HollowEarth in recent times - that or BeneathTheEarth depending on how you interpret it.

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* In the Literature/ArtemisFowl series, ;;Literature/ArtemisFowl series;;, the Fairies moved to inside the HollowEarth in recent times - -- that or BeneathTheEarth depending on how you interpret it.



** Even the world of elemental Air apparently is this according to the map, even though the "walls" presumably consist of some kind of force fields rather than solid matter. The final book implies that all the worlds exist in what used to be our solar system, and can be reached through mechanical rockets even after the Death Gate is closed -- after you get through the planets' artificial crust, in any case.

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** Even the world of elemental Air apparently is this according to the map, even though the "walls" presumably consist of some kind of force fields rather than solid matter. matter.
**
The final book implies that all the worlds exist in what used to be our solar system, and can be reached through mechanical rockets even after the Death Gate is closed -- after you get through the planets' artificial crust, in any case.



* They also turned up in ''Series/StarTrekTheNextGeneration'' and ''Series/StarTrekVoyager''.
** [[Series/StarTrekTheOriginalSeries TOS]] episode "For The World Is Hollow And I Have Touched The Sky" had a variation, a shell covering an artificial planetoid to hold the atmosphere in.

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* They also Such worlds turned up in ''Series/StarTrekTheNextGeneration'' and ''Series/StarTrekVoyager''.
**
''Series/StarTrekVoyager''. The [[Series/StarTrekTheOriginalSeries TOS]] episode "For The World Is Hollow And I Have Touched The Sky" had a variation, a shell covering an artificial planetoid to hold the atmosphere in.



* In ''Series/{{Sanctuary}}'' it turns out that the Earth really is hollow. And the only people that knew were [[spoiler:Jekyll and Hyde]].
** It's actually populated by technologically-advanced humans and Abnormals who have migrated underground in order to escape the vampires ruling the world at the time.

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* In ''Series/{{Sanctuary}}'' it turns out that the Earth really is hollow. And the only people that knew were [[spoiler:Jekyll hollow, and Hyde]].
** It's actually
populated by technologically-advanced humans and Abnormals who have migrated underground in order to escape the vampires ruling the world at in the time.past. And the only people that knew were [[spoiler:Jekyll and Hyde]].



** ''TabletopGame/{{Pathfinder}}'', as a nod to ''Pellucidar'', has a inverted vault in its Underdark-analogue, complete with otherwise-extinct animals. It's more like a mini-world than an actual hollow planet, though; an ancient terrarium of Sufficiently Advanced... somethings.



* ''TabletopGame/GeniusTheTransgression'' has the Hollow Earth as one of its many bardos - pocket realities created when established science is proven wrong. From the presence of things like "brontosaurs" and Piltdown Men, it's implied to be a catch-all for [[ArtisticLicensePaleontology every paleontological blunder ever committed]].
** It's also been recently taken over by [[StupidJetpackHitler Nazis]]- to be precise, [[TheHeartless Manes]] formed at the end of [=WW2=] when the real Nazis were crushed and almost all faith in their ideology crumbled.
* There is some mentions in the TabletopGame/{{Warhammer 40000}} rulebook about hollow worlds.
* The plane of Mirrodin (formerly [[spoiler:Argentum]]) in ''TabletopGame/MagicTheGathering'' is hollow, and mostly metallic. There are five channels, called lacuna, through which one of the planes five suns emerged from the mana core. There are five lacunae, one for each color of mana, and one for each of Mirrodin's five suns.
* The [[TabletopGame/WorldOfSynnibarr Synnibarr]] roleplaying game's titular planet is hollow. According to the backstory, Earth's sun was becoming unstable, and because Earth itself was physically unsuitable, the planet's stellar engineers took Mars and expanded it, hollowed it out, and terraformed it until it was completely unrecognizable to serve as a new home for the evacuated human race. Overlaps with ThatsNoMoon, as a suitably huge power generator was installed in Synnibarr's core to power the artificial planetary heating and atmosphere systems as well as the engine designed to propel the planet to a new star system to take up orbit in. After dozens of catastrophes, wars, and invasions during the 40,000 year journey, the inner core of the planet was abandoned, with the planetary machinery almost completely inaccessible at the top of a thousand-mile high mountain ascending to the planet's geographical core.
* Downplayed with the discontinued world of Tharun in ''TheDarkEye'', which was actually an alternate universe (with its own gods and celestial bodies), whose only gates were reached through deep caverns. So it felt like a hollow earth, although it wasn't.

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* ''TabletopGame/{{Pathfinder}}'', as a nod to ''Pellucidar'', has Deep Tolguth, an inverted vault in its Underdark-analogue, complete with otherwise-extinct animals. It's more like a country-sized mini-world than an actual hollow planet, though; an ancient terrarium made by Sufficiently Advanced... somethings.
* ''TabletopGame/GeniusTheTransgression'' has the Hollow Earth as one of its many bardos - -- pocket realities created when established science is proven wrong. From the presence of things like "brontosaurs" and Piltdown Men, it's implied to also be a catch-all for [[ArtisticLicensePaleontology every paleontological blunder ever committed]].
**
committed]]. It's also been recently taken over by [[StupidJetpackHitler Nazis]]- Nazis]] -- to be precise, [[TheHeartless Manes]] (creatures and people created in the same way bardos when an established theory or philosophy is abandoned) formed at the end of [=WW2=] when the real Nazis were crushed and almost all faith in their ideology crumbled.
* There is some mentions in the TabletopGame/{{Warhammer 40000}} ''TabletopGame/Warhammer40000'' rulebook about hollow worlds.
* The plane of Mirrodin (formerly [[spoiler:Argentum]]) in ''TabletopGame/MagicTheGathering'' is hollow, and mostly metallic. There are five channels, called lacuna, lacunae, through which one of the planes five suns emerged from the mana core. There are five lacunae, one for each color of mana, and one for each of Mirrodin's five suns.
* The [[TabletopGame/WorldOfSynnibarr Synnibarr]] ''TabletopGame/WorldOfSynnibarr'' roleplaying game's titular planet is hollow. According to the backstory, Earth's sun was becoming unstable, and because Earth itself was physically unsuitable, the planet's stellar engineers took Mars and expanded it, hollowed it out, and terraformed it until it was completely unrecognizable to serve as a new home for the evacuated human race. Overlaps with ThatsNoMoon, as a suitably huge power generator was installed in Synnibarr's core to power the artificial planetary heating and atmosphere systems as well as the engine designed to propel the planet to a new star system to take up orbit in. After dozens of catastrophes, wars, and invasions during the 40,000 year journey, the inner core of the planet was abandoned, with the planetary machinery almost completely inaccessible at the top of a thousand-mile high mountain ascending to the planet's geographical core.
* Downplayed with the discontinued world of Tharun in ''TheDarkEye'', ''TabletopGame/TheDarkEye'', which was actually an alternate universe (with its own gods and celestial bodies), whose only gates were reached through deep caverns. So it felt like a hollow earth, although it wasn't.



* The world of ''VideoGame/DwarfFortress'' may or may not be spherical, but it's hollow alright, as your dwarves may discover [[DugTooDeep the hard way]]. Specifically, [[spoiler:it has a sort of "Swiss cheese" layering of an unmineable rock called slade which is covered in semi-molten rock and adamantine, depending on where.]]

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* The world of ''VideoGame/DwarfFortress'' may or may not be spherical, but it's hollow alright, as your dwarves may discover [[DugTooDeep the hard way]]. Specifically, [[spoiler:it has a sort of "Swiss cheese" layering of an unmineable rock called slade which is covered in semi-molten rock and adamantine, depending on where.]]where]].



* Some of the planets in both ''VideoGame/SuperMarioGalaxy'' and ''VideoGame/SuperMarioGalaxy2'' resemble hollowed out spheres covered with huge holes and a [[UnrealisticBlackHole black hole]] underneath. If you fall into the black hole, you die. Also, the boss battle against [[EverythingsEvenWorseWithSharks Kingfin]] takes place inside a hollow planet, and in the case of the final battle against [[BigBad Bowser]], a hollow ''Sun''.

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* Some of the planets in both ''VideoGame/SuperMarioGalaxy'' and ''VideoGame/SuperMarioGalaxy2'' ''VideoGame/SuperMarioGalaxy2'':
** Some of the planets in both games
resemble hollowed out hollowed-out spheres covered with huge holes and with a [[UnrealisticBlackHole black hole]] underneath. If you fall into the black hole, you die. Also, the die.
** The
boss battle against [[EverythingsEvenWorseWithSharks Kingfin]] takes place inside a hollow planet, and in the case of the final battle against [[BigBad Bowser]], Bowser]] is inside a hollow ''Sun''.



* ''Webcomic/SchlockMercenary'' has the Buuthandi, built by the F'sherl-Ganni. Due to math they're rather more like spherical solar sails counterbalanced with living habitats (drastically reducing the living space compared to a standard Dyson Sphere-- only a few hundred thousand times Earth rather than millions), but allow them to tame an entire star as a source of energy and mass.
* In ''Webcomic/{{Homestuck}}'' [[spoiler:The Battlefield has a very thick crust with a hollow center housing THE TUMOR (Before being removed) in its center.]]

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* ''Webcomic/SchlockMercenary'' has the Buuthandi, built by the F'sherl-Ganni. Due to math they're rather more like spherical solar sails counterbalanced with living habitats (drastically reducing the living space compared to a standard Dyson Sphere-- Sphere -- only a few hundred thousand times Earth rather than millions), but allow them to tame an entire star as a source of energy and mass.
* In ''Webcomic/{{Homestuck}}'' [[spoiler:The ''Webcomic/{{Homestuck}}'', [[spoiler:the Battlefield has a very thick crust with a hollow center housing THE TUMOR (Before being (before it was removed) in its center.]]



* Webcomic/AxeCop features a civilization of people living within the Moon rather than on top. The Moon Ninjas come from here.

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* Webcomic/AxeCop ''Webcomic/AxeCop'' features a civilization of people living within the Moon rather than on top.its surface. The Moon Ninjas come from here.



[[folder:Web Originals]]
* The Web site [[http://www.psypets.net/ PsyPets]] has this as part of its FramingDevice; you're a volunteer working for the Hollow Earth Research Group (HERG). However, "Hollow Earth" in this setting is not ''actually'' inside Earth; rather, it's just a ''name'' given to an alternate dimension because the researchers were reminded of the old myth. References to the actual "Hollow Earth" pop up sometimes, though.

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[[folder:Web Originals]]
Original]]
* The Web site website [[http://www.psypets.net/ PsyPets]] has this as part of its FramingDevice; you're a volunteer working for the Hollow Earth Research Group (HERG). However, "Hollow Earth" in this setting is not ''actually'' inside Earth; rather, it's just a ''name'' given to an alternate dimension because the researchers were reminded of the old myth. References to the actual "Hollow Earth" pop up sometimes, though.
16th Jul '17 9:53:22 AM nombretomado
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** It's also been recently taken over by [[StupidJetpackHitler Nazis]]- to be precise, [[TheHeartless Manes]] formed at the end of WW2 when the real Nazis were crushed and almost all faith in their ideology crumbled.

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** It's also been recently taken over by [[StupidJetpackHitler Nazis]]- to be precise, [[TheHeartless Manes]] formed at the end of WW2 [=WW2=] when the real Nazis were crushed and almost all faith in their ideology crumbled.
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