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TIL that when a moon has a moon, it's called a moonmoon. Theoretical
candidates that could host a moonmoon are Earth's moon, Callisto, Titan,
and Iapetus, though none have ever been detected
https://www.science.org/content/article/moons-moons-could-exist-and-s...
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|u/Splorgamus - 10 hours
|
|Are there potential moonmoonmoons?


  |u/ConfuciusCubed - 9 hours
  |
  |We can only hope.


  |u/FocalorLucifuge - 9 hours
  |
  |Moon moon moon moon, I want you in my moon.


    |u/SurviveAdaptWin - 1 hour
    |
    |So we can be together?


      |u/FocalorLucifuge - 55 minutes
      |
      |Universal law of gravitational attraction.


    |u/Popular-Row4333 - 8 hours
    |
    |This comment should have at least 1k upvotes, and it's a travesty it
    |doesn't.


  |u/gmishaolem - 7 hours
  |
  |> moonmoonmoons  This is just what happened with neopets. They added
  |pets for your pets that were petpets, then they added pets for petpets
  |that were called petpetpets. So you might have some sort of big bear
  |neopet, and it might have a little kitten petpet, and the kitten might
  |have a flea petpetpet. Yes this is real.


    |u/Disciple153 - 1 hour
    |
    |Sounds just like parasites in real life, which can have [hyperparasi
    |tes](https://en.m.wikipedia.org/w/index.php?title=Hyperparasite)


  |u/trollsong - 9 hours
  |
  |At some point it's just a flail with extra steps


    |u/ravens-n-roses - 9 hours
    |
    |There's no chains though


      |u/Joe_Buck_Yourself_ - 9 hours
      |
      |Gravity is the chain


        |u/ravens-n-roses - 9 hours
        |
        |Id main that weapon


        |u/slinger301 - 8 hours
        |
        |Is that a Linkin Park lyric?


  |u/Xenon009 - 5 hours
  |
  |Most likely not.  A moonmoons' only realistic hope of existing is a
  |comet or asteroid getting trapped in the orbit of a gigantic moon,
  |which in turn orbits a gas giant.  Moons are only relatively stable,
  |but earths moon will eventually leave earths orbit, but a moonmoom
  |takes that to the next level, with a gas giant and a would-be planet
  |both trying to push it in different directions. Thats probably why we
  |don't see moonmoons, they're just outrageously unstable.  So
  |moonmoonmoons have three hurdles to their existence.  1) A small
  |moonmoon needs to capture a satellite at all, which is highly unlikely
  |that the gas giant, or even the moon, wouldn't steal it first.  2) the
  |moonmoon needs to stay stable enough to capture a satellite while its
  |orbiting a moon  3) the moonmoonmoon has to stay stable enough for
  |someone to spot the bloody thing.  Somewhere, somewhen in the
  |universe, a moonmoonmoon did, does, or will probably exist, but it
  |being now is unlikely, and somewhere near enough, we could ever see it
  |even less likely.  Also, even if it did, the moonmoonmoon is probably
  |little more than a pebble.


    |u/Sixbiscuits - 2 hours
    |
    |I thought the earth moon's orbit was on the path to becoming larger
    |until they become tidally locked?


  |u/Top_Tart_7558 - 7 hours
  |
  |They probably exist, but we can't detect terrestrial planets very well
  |from such a vast distance.    We just recently photographed the first
  |foreign solar system


  |u/I_AM_ACURA_LEGEND - 8 hours
  |
  |It’s moons all the way down


  |u/Rudeboy67 - 5 hours
  |
  |Like the island in a lake on an island in a lake on an island?
  |https://www.livescience.com/33679-world-largest-island-lake-island-
  |lake-island-google-earth.html


  |u/thebestdaysofmyflerm - 4 hours
  |
  |Like a petpetpet


  |u/I_might_be_weasel - 9 hours
  |
  |[Dance time.](https://makeagif.com/gif/ppappen-pineapple-apple-pen-
  |officiallong-ver-pikotaro-D2lZIa)


  |u/Upset-Basil4459 - 5 hours
  |
  |Since our sun is orbiting the galaxy, it should be theoretically
  |possible. (Replace the center of the galaxy with a massive star, and
  |replace the sun with massive planet)


  |u/doomgiver98 - 4 hours
  |
  |If a moon becomes to big wouldn't it just become a planet?


    |u/Lypos - 4 hours
    |
    |Pluto thought so, but they denied its right faster than the Jedi
    |Council denied Anakin.


      |u/Thatsnicemyman - 3 hours
      |
      |Take a seat, young dwarf planet.


      |u/GrownUpACow - 3 hours
      |
      |It should be noted that Pluto is smaller than our moon.


    |u/zealoSC - 2 hours
    |
    |Only if it's parent planet becomes big enough to call a star


  |u/J3wb0cca - 4 hours
  |
  |If they are proportionate to the sizes of planets and moons then it’s
  |probably too small to detect. With the amount of objects being pulled
  |in thanks to the sun and Jupiter, the largest moons probably have
  |something they’re pulling in.


  |u/WhisperingWillow_Bre - 1 hour
  |
  |Moonmoonmoon madness!


|u/ClassiqueGTA - 10 hours
|
|Dammit, Moon Moon.


  |u/I_might_be_weasel - 9 hours
  |
  |https://youtu.be/iC1PLC6ljJc?si=q5gZanrAY83iiocd


    |u/Goodbar47 - 7 hours
    |
    |That video never fails to crack me up! Moon Moon's a legend.


      |u/cyborg_127 - 1 hour
      |
      |But this video has nothing whatsoever to do with Moon Moon.
      |https://knowyourmeme.com/memes/moon-moon


  |u/thirtyseven1337 - 8 hours
  |
  |This guy gets it.


|u/WhenTardigradesFly - 9 hours
|
|should be called a mooon.  and if a mooon has a moon, that would be a
|moooon, and if that had a moon it would be a mooooon, and so on.


  |u/meester_pink - 9 hours
  |
  |Then a boulder on the ground is a mon?


    |u/epostma - 9 hours
    |
    |I think a planet would be a mon. And a star would be a mn.  Edit:
    |every 'o' is a representation of one of the bodies it is circling
    |around!


      |u/Astronius-Maximus - 4 hours
      |
      |What is below a star, and would it be m or n?


        |u/fenrir245 - 4 hours
        |
        |m&ms


          |u/devvorare - 1 hour
          |
          |Ah, a binary system


  |u/SlothOfDoom - 9 hours
  |
  |https://i.imgur.com/muAGh41.jpeg


    |u/maxdamage4 - 4 hours
    |
    |Nani?!


      |u/Samuel_L_Johnson - 1 hour
      |
      |Omae wa mou shindeiru


  |u/fanau - 8 hours
  |
  |They definitely should have asked you first - this is much more
  |preferable.


    |u/WhenTardigradesFly - 7 hours
    |
    |it's not too late.  if they could change their minds about pluto
    |being a planet they can change their minds about what to call a
    |moon's moon too.


      |u/fanau - 7 hours
      |
      |That’s it. Make a petition. I’ll sign it.


  |u/zealoSC - 2 hours
  |
  |Physics teachers are strong advocates of this 'spherical cows in a
  |vacuum ' model


  |u/Benyed123 - 2 hours
  |
  |The Luuke logic


|u/trustych0rds - 10 hours
|
|I always thought that a moon moon would always be unstable because of
|the moon's parent pulling on it as well... which would negate the
|"Stable" part of the definition for it to be a moon(moon).


  |u/OttoVonWong - 10 hours
  |
  |The moon moon would have to be fairly close. Think of it like how the
  |sun hasn’t thrown the moon off its orbit because it’s close enough to
  |the Earth.


    |u/SUDDENLY_VIRGIN - 7 hours
    |
    |That is... an amazing example


  |u/myotheralt - 9 hours
  |
  |Would the Apollo Command Module count while the lunar lander went
  |down? Granted, not a natural satellite.


    |u/ramxquake - 7 hours
    |
    |It's not a long-term stable orbit.


    |u/Bed8 - 9 hours
    |
    |Yes it’s a moon moon, but notably an artificial satellite. In much
    |the same way, any object orbiting our moon would be, or any other
    |object orbiting the moon of another planetary body. What would
    |actually be considered a surprise to find would be a natural
    |satellite moon moon.


  |u/Alotofboxes - 9 hours
  |
  |The moonmoon would have to be pritty close to the moon, and the moon
  |would have to be pritty large and relatively far from the planet.   It
  |would be like how Mercury and Venus don't have moons because the sun
  |would quickly destabilize the orbits.  If we find one, it'll probably
  |be around a distant moon around a gas giant.


  |u/jaysaccount1772 - 8 hours
  |
  |That's not true, it just has to be a natural satellite.


  |u/Kahnza - 5 hours
  |
  |https://en.wikipedia.org/wiki/Three-body\_problem


  |u/phobosmarsdeimos - 5 hours
  |
  |If that were true then moons are unstable because of the Sun.


    |u/trustych0rds - 3 hours
    |
    |Moon is slightly unstable and getting further away very slightly.


      |u/phobosmarsdeimos - 3 hours
      |
      |Until it's tidally locked and won't move anymore.


        |u/StairwayToPavillion - 3 hours
        |
        |it is tidally locked


  |u/NotTheAbhi - 5 hours
  |
  |I assume it would have to be small and close to the moon so it's not
  |affected by the parent.


|u/wadeishere - 9 hours
|
|Bald


  |u/Wynter_born - 4 hours
  |
  |Giga bald.


|u/A_Mirabeau_702 - 9 hours
|
|One small stepstep for a manman, one giant leapleap for mankindkind


|u/Cantthinkofnamedamn - 9 hours
|
|That's no moonmoon!


  |u/CNpaddington - 9 hours
  |
  |It’s a spacespacestation!


    |u/phobosmarsdeimos - 5 hours
    |
    |That would be an interesting concept, a space station station...
    |Station!


|u/TerrifiCK_ - 9 hours
|
|Giga


|u/Crafty-Photograph-18 - 5 hours
|
|Hate to be that guy, but moonmoon is the informal name. The words you'd
|see them being referred to by in any serious situation are "submoon" or
|"subsatellite"


|u/Peanut_Champion - 9 hours
|
|Twitch is hosting one right now


|u/Fragrant_Reporter_86 - 7 hours
|
|twitch hosts a moonmoon


|u/Bigred2989- - 8 hours
|
|My mind immediately went to the Moon Moon colony in Double Zeta Gundam.
|That was a weird couple episodes in an already odd show.


|u/DebeliHrvat - 5 hours
|
|That NASA mission that orbited the moon and then returned to Earth was
|technically a moonmoon


  |u/pemcil - 4 hours
  |
  |Earth is technically a moonmoon. Bodies orbit each other. It takes two
  |to gravitate.


|u/Slinktard - 4 hours
|
|That’s no moonmoon. That’s a battlestationbattlestation


|u/IWantTheLastSlice - 9 hours
|
|M O O N M O O N spells moon moon.


  |u/Kliffoth - 3 hours
  |
  |Laws yes!


|u/scottcmu - 8 hours
|
|That's no moonmoon, that's a space station space station. 


|u/trophycloset33 - 5 hours
|
|Wait if we capture an asteroid and lock it in moon orbit would it
|classify as moonmoon?


|u/wokexinze - 4 hours
|
|The fact you can have space craft orbit the moon like the Lunar
|Reconnaissance Orbiter. Pretty much easily confirms that this can be the
|case.


|u/FineSharts - 9 hours
|
|I wish our moon had a badass name like all the other planets’ moons.
|How’d we lose that one


  |u/AwfulUsername123 - 8 hours
  |
  |All other moons are so called in honor of our moon's name.


  |u/charrsasaurus - 8 hours
  |
  |The moon's name is Luna


    |u/AwfulUsername123 - 8 hours
    |
    |This is mostly a misconception caused by science fiction. The name
    |"Luna" is used in English, but the great majority of English-
    |speaking astronomers, including the International Astronomical
    |Union, call it simply "the Moon". In other languages that use
    |"Luna", it's generalized like "Moon" in English. A Spanish speaker
    |can say Phobos and Deimos are "lunas" of Mars.


      |u/phobosmarsdeimos - 4 hours
      |
      |Luna isn't even used in English.  In English the name is The Moon.
      |Luna is Latin.


|u/ScissorNightRam - 9 hours
|
|Can a moon have rings? Can rings have rings?


|u/dethb0y - 9 hours
|
|if we had the courage, we could give the moon a moon, and then that moon
|a moon, and then, that moon a moon itself...


|u/Boojum2k - 9 hours
|
|One SF novel I read called them a moony. Not sure which is less bad.


|u/watchingsongsDL - 9 hours
|
|What about a sunsun?


|u/ThunderBlunt777 - 9 hours
|
|Zeetus Lapetus Zenon!


|u/HumbleXerxses - 8 hours
|
|So.....that one part on Requiem for a Dream shall now be called, "The
|Moon moon scene".


|u/seeingeyefrog - 8 hours
|
|Yeah, I'm not going to call it that. I'll go with sub-moon.


|u/Deitaphobia - 8 hours
|
|Wouldn't we know by now if our moon had it's own moon?


|u/AdaptiveVariance - 6 hours
|
|Not the much more intuitive metamoon???


|u/TheManWithNoSchtick - 6 hours
|
|I'm just gonna say it; scientists are bad at naming things.


|u/equality4everyonenow - 6 hours
|
|Did Elon's car become our moonmoon?


|u/SkyInital_6016 - 5 hours
|
|your mom is a moonmoon


|u/bones_boy - 5 hours
|
|YIL Mike Tyson likes to show his moonmoon on Netflix


|u/joedude - 4 hours
|
|imagine the largest moon on the largest planet possible and someone tell
|me how many moonmoonmoonmoonmoonmoonmoonmoonmmoons we have get to before
|theyre too small or whatever.


|u/pemcil - 4 hours
|
|Could an astronaut, from the surface of the moon, single-handedly cause
|a baseball to stably orbit the moon by  pitching it up at an optimal
|angle? Does he have the strength?


  |u/Ruadhan2300 - 2 hours
  |
  |Nope, aside from the obvious problem that you can't get the ball going
  |fast enough to orbit, the orbit would necessarily start and finish at
  |ground level because all orbits describe a loop.  Maybe if he stood on
  |a mountaintop and had the mother of all pitching machines.


|u/Stahl_Scharnhorst - 4 hours
|
|[And you take the moon...](https://www.youtube.com/watch?v=6Xza9qae3Xk)


|u/adfthgchjg - 3 hours
|
|Not “moon McMooney face moon”?


|u/mrcydonia - 3 hours
|
|They should have used a combo of Latin and old Greek, like Seleneluna.


|u/zealoSC - 2 hours
|
|The Apollo missions were temporary moonmoons.


|u/SemiHemiDemiDumb - 2 hours
|
|I tried to do this numerous times in Universe Sandbox and could never
|get it to work.


|u/Kurtotall - 2 hours
|
|That's no moonmoon.


|u/kirokun - 1 hour
|
|moonmoon is clintstevens father


|u/PoopyHead-4MAR- - 1 hour
|
|ANIME JA NAI


|u/theguyfromgermany - 44 minutes
|
|Que QI question: How many moon does the earth have?  One  Brrrr brrrrr
|brrrrr  Actually the moon has a moon called a noonmoon...


|u/BananaDiquiri - 9 hours
|
|There is a pretty good joke here about the 7th planet but I’m an adult
|so I will just give someone the setup.