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** ''VideoGame/SonicCD'' takes place on the appropriately named Little Planet, which appears in the sky once a year. It reappears in ''VideoGame/SonicTheHedgehog4''.


* The Creator/FredricBrown story ''Placet is a Crazy Place'' features a tiny planet with a breathable atmosphere with a core made of extra-dense 'heavy' matter to give it its shape and gravity. It even has life forms made of heavy matter that "fly" through the crust (which is like air to them since they are so dense), causing earthquakes. It obviously suffers from the "what keeps the heavy matter from expanding" problem, but might be excused since it is a story from the 40s and ScienceMarchesOn. Also, the heavy matter "birds" that cause earthquakes are completely 100% excused by the RuleOfFunny; the buildings on Placet are small and light, and never last more then three weeks. The birds fly right through the foundations. Also, Jack Vance's short story "We'll Build Your Dream Castle" retreats for the super-rich are built on a few dozen chunks of super-dense matter in orbit near Earth.

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* The Creator/FredricBrown story ''Placet is a Crazy Place'' features a tiny planet with a breathable atmosphere with a core made of extra-dense 'heavy' matter to give it its shape and gravity. It even has life forms made of heavy matter that "fly" through the crust (which is like air to them since they are so dense), causing earthquakes. It obviously suffers from the "what keeps the heavy matter from expanding" problem, but might be excused since it is a story from the 40s and ScienceMarchesOn. Also, the heavy matter "birds" that cause earthquakes are completely 100% excused by the RuleOfFunny; the buildings on Placet are small and light, and never last more then three weeks. The birds fly right through the foundations. Also,
* In
Jack Vance's short story "We'll Build Your Dream Castle" Castle", retreats for the super-rich are built on a few dozen chunks of super-dense matter in orbit near Earth.


* King Kai's planet in ''Anime/DragonBallZ''. Despite being maybe fifty feet in diameter, it strangely has ten times earth's gravity. Based on King Kai's vague explanation, it apparently has the same mass as Earth, heavily compressed. This should technically make it a neutron star, but then, nobody ever accused ''Anime/DragonBallZ'' of realism. Even if they did, it's ''still'' the self-built home of a PhysicalGod, and ''still'' set up in a corner of the afterlife, so it might as well be decorated with "AWizardDidIt" in 50-foot-high neon any way the audience looks at it. A non-canonical movie gave a different explanation for why the gravity is so strong: King Kai's planet serves as a prison for an extremely powerful space pirate named Bojack. When it's blown up after the Cell Games, Bojack is set free. [[VoodooShark This manages to make even less sense than the canonical explanation]]. ''Anime/DragonBallZBattleOfGods'' explains that King Kai's planet was once larger, possibly realistically so, until Beerus destroyed most of it in retaliation for [[DisproportionateRetribution losing a game of Hide and Seek]]. This doesn't explain how it continues to be a planet now, of course.

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* King Kai's planet in ''Anime/DragonBallZ''. Despite being maybe fifty feet in diameter, it strangely has ten times earth's gravity. Based on King Kai's vague explanation, it apparently has the same mass as Earth, heavily compressed. This should technically make it a neutron star, but then, nobody ever accused ''Anime/DragonBallZ'' of realism. Even if they did, it's ''still'' the self-built home of a PhysicalGod, and ''still'' set up in a corner of the afterlife, so it might as well be decorated with "AWizardDidIt" in 50-foot-high neon any way the audience looks at it. A non-canonical movie gave a different explanation for why the gravity is so strong: King Kai's planet serves as a prison for an extremely powerful space pirate named Bojack. When it's blown up after the Cell Games, Bojack is set free. [[VoodooShark This manages to make even less sense than the canonical explanation]]. ''Anime/DragonBallZBattleOfGods'' explains that King Kai's planet was once larger, possibly realistically so, until Beerus destroyed most of it in retaliation for [[DisproportionateRetribution losing a game of Hide and Seek]]. This doesn't explain how it continues to be a planet now, of course.


* ''Franchise/SonicTheHedgehog'':

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* ''Franchise/SonicTheHedgehog'':''VideoGame/SonicTheHedgehog'':


* Mildian in ''Manga/EdensZero'' is a very tiny planet with a noticeable curvature from ground level, enough so that the main characters reasonably believe that the first building they come across on the planet is also the ''only'' one.

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* Mildian in ''Manga/EdensZero'' is a very tiny planet with a noticeable curvature from ground level, enough so that to make the main characters reasonably believe confident that the first building they come across on the planet is also probably the ''only'' one.


* Mildian in ''Manga/EdensZero'' is described as a very tiny planet, and while it isn't stated ''how'' tiny it is, it's small enough so that its curvature can be noticed from the ground.

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* Mildian in ''Manga/EdensZero'' is described as a very tiny planet, and while it isn't stated ''how'' tiny it is, it's small planet with a noticeable curvature from ground level, enough so that its curvature can be noticed from the ground.main characters reasonably believe that the first building they come across on the planet is also the ''only'' one.


* An episode of ''Manga/SgtFrog'' had one of Keroro's last-ditch invasion schemes involve stealing garbage and water from Earth to create a mini-planet. We learn it was a "last-ditch" scheme because unauthorized planet creation is against the law, and when the planet creation goes out of control it nearly becomes big enough to qualify as a full planet, leading to the Keronians nearly getting arrested by SpacePolice officer Poyon.

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* An episode of ''Manga/SgtFrog'' had one of Keroro's last-ditch invasion schemes involve stealing garbage and water from Earth to create a mini-planet. We learn it was a "last-ditch" scheme because unauthorized planet creation is against the law, and when the planet creation goes out of control control, it nearly becomes big enough to qualify as a full planet, leading to the Keronians nearly getting arrested by SpacePolice officer Poyon.



* Mildian in ''Manga/EdensZero'' is described as a very tiny planet, and while it isn't stated ''how'' tiny it is, it's small enough so that its curvature can be noticed from the ground.



* Ego The Living Planet in ''Film/GuardiansOfTheGalaxyVol2'' is the size of Earth's moon with Earthlike air and gravity.

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* [[GeniusLoci Ego The the Living Planet Planet]] in ''Film/GuardiansOfTheGalaxyVol2'' is the size of Earth's moon with Earthlike air and gravity.


* In "Too High, Too Far, Too Soon," the WebAnimation/BravestWarriors come across a planet that is both this and YearInsideHourOutside.

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* In "Too High, Too Far, Too Soon," the WebAnimation/BravestWarriors come across a planet that is both this and has a case of YearInsideHourOutside.

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* In "Too High, Too Far, Too Soon," the WebAnimation/BravestWarriors come across a planet that is both this and YearInsideHourOutside.

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* ''Webcomic/AwkwardZombie'': [[http://www.awkwardzombie.com/index.php?page=0&comic=031416 One strip]] shows why it would suck to live on one of these. When your planet is the size of a cottage and your food supplies consist of a single coconut, it's really easy for your ecosystem to be wrecked by [[Franchise/SuperMarioBros a passing plumber]] deciding to use your planet's entire food supply as ammunition.

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* Planets in ''WesternAnimation/BountyHamster'' are small enough that a reasonably fast ground vehicle can generally go around one in about ten seconds.


* Creator/NKJemisin's ''Literature/InheritanceTrilogy'': The TricksterGod Sieh has a collection of stars and planets the size of toy balls, some of which like to follow him around. Their real nature is ambiguous until the third book, when he puts some of them back in space where he found them and proves that the "Stole the sun for a prank" PlaygroundSong about him is NotHyperbole.

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* Creator/NKJemisin's ''Literature/InheritanceTrilogy'': The TricksterGod Sieh has a collection of stars and planets the size of toy balls, some of which like to follow him around. Their real nature is ambiguous until the third book, when he puts some of them back in space where he found space, undoes the spell keeping them miniaturized, and proves that the "Stole the sun for a prank" PlaygroundSong about him is NotHyperbole.

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* Creator/NKJemisin's ''Literature/InheritanceTrilogy'': The TricksterGod Sieh has a collection of stars and planets the size of toy balls, some of which like to follow him around. Their real nature is ambiguous until the third book, when he puts some of them back in space where he found them and proves that the "Stole the sun for a prank" PlaygroundSong about him is NotHyperbole.


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* The backstory of ''HouseOfSuns'' features a planetoid that held the Gentian household in the distant past. It had standard Earth gravity which was hinted to be due to a small black hole contained within the planetoid.
* Justified with a Baby Universe in The New World of Mr. Tompkins. The gravitational constant is enormous.
** Inverted in Relativity Land- Relativity Land should be a black hole if gravity still works the same despite the speed of light being 30 mph or less.
* The planet Lorien from the ''Literature/LorienLegacies'' is one tenth the size of Earth and Mogadore one fifth.

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* The backstory of ''HouseOfSuns'' ''Literature/HouseOfSuns'' features a planetoid that held the Gentian household in the distant past. It had standard Earth gravity which was hinted to be due to a small black hole contained within the planetoid.
* ''Literature/TheNewWorldOfMrTompkins: Justified with a Baby Universe in The New World of Mr. Tompkins. The where the gravitational constant is enormous.
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enormous. Inverted in Relativity Land- Relativity Land Land, which should be a black hole if gravity still works the same despite the speed of light being 30 mph or less.
* The planet ''Literature/LorienLegacies'': Lorien from the ''Literature/LorienLegacies'' is one tenth the size of Earth and Mogadore one fifth.



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* Prospit and Derse from ''Webcomic/{{Homestuck}}'': If the size of the towers on their respective moons is any indication, they are smaller than a [[Franchise/StarWars Death Star]], though still quite big. This ultimately applies to almost every planet in the Incipisphere; the players' Lands are likely less than a hundred kilometers in diameter, small enough that at a fairly distant view the players' homes are still visible, [[{{Bizarrchitecture}} giant tower status]] notwithstanding. Skaia and The Battlefield within it are large, but still fairly small for a planet.

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* Prospit and Derse from ''Webcomic/{{Homestuck}}'': Prospit and Derse. If the size of the towers on their respective moons is any indication, they are smaller than a [[Franchise/StarWars Death Star]], though still quite big. This ultimately applies to almost every planet in the Incipisphere; the players' Lands are likely less than a hundred kilometers in diameter, small enough that at a fairly distant view the players' homes are still visible, [[{{Bizarrchitecture}} giant tower status]] notwithstanding. Skaia and The Battlefield within it are large, but still fairly small for a planet.



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* SCP-756 is this trope up to eleven, with a WHOLE MINIATURE SOLAR SYSTEM IN A ROOM!!!

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\n* SCP-756 ''Wiki/SCPFoundation'': [[http://www.scp-wiki.net/scp-756 SCP-756]] is this trope up to eleven, with an entire solar system fitting inside a WHOLE MINIATURE SOLAR SYSTEM IN A ROOM!!!room.



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* [[ExactlyWhatItSaysOnTheTin All the planets]] in ''WesternAnimation/TinyPlanets''; in the episode "Gone with the Wind", the protagonists find the path to their goal blocked, and solve the problem by going all the way around the planet and approaching it from the far side. Taking it up a notch, the title sequence shows a trio of aliens living on an asteroid not much larger than them.

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* [[ExactlyWhatItSaysOnTheTin All the planets]] in ''WesternAnimation/TinyPlanets''; in the episode "Gone with the Wind", the protagonists find the path to their goal blocked, and solve the problem by going all the way around the planet and approaching it from the far side. Taking it up a notch, the title sequence shows a trio of aliens living on an asteroid not much larger than them.themselves.



* Dwarf Terrace 9 from the ''WesternAnimation/RickAndMorty'' season 2 finale, which the family hides out on from the Galactic Federation. It's small enough Morty can throw a frisbee across the surface and catch it from the other side with some practice, and its circumference is about the size of a normal neighborhood.

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* ''WesternAnimation/RickAndMorty'': Dwarf Terrace 9 from the ''WesternAnimation/RickAndMorty'' season 2 finale, which the family hides out on from the Galactic Federation. It's small enough that Morty can throw a frisbee across the surface and catch it from the other side with some practice, and its circumference is about the size of a normal neighborhood.



** A black hole inside a hollow shell could work (this is used in ''The World is Round'', a novel by physicist Tony Rothmann, though in this case the planet in question is much ''larger'' than Earth, and the scheme is used to keep the surface gravity ''down''). Black holes less than about the mass of the Moon are theoretically thermodynamically unstable, though this is ''much'' less of a problem than with neutronium (they would eventually evaporate, but it turns out the lifetime for a black hole of mass 10^11 kg ... roughly the mass of a hill of dry sand 250 m high ... is in the billions of years, with larger holes having even longer lifetimes).

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** A black hole inside a hollow shell could work (this is used in ''The World is Round'', a novel by physicist Tony Rothmann, though in this case the planet in question is much ''larger'' than Earth, and the scheme is used to keep the surface gravity ''down''). Black holes less than about the mass of the Moon are theoretically thermodynamically unstable, though this is ''much'' less of a problem than with neutronium (they would eventually evaporate, but it turns out the lifetime for a black hole of mass 10^11 kg ... kg... roughly the mass of a hill of dry sand 250 m high ...high... is in the billions of years, with larger holes having even longer lifetimes).

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* The planet Lorien from the ''Literature/LorienLegacies'' is one tenth the size of Earth and Mogadore one fifth.

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