Does Planet 9 Exist?

A planet has been predicted to orbit the sun with a period of 10,000 years, a mass 5x that of Earth on a highly elliptical and inclined orbit. What evidence supports the existence of such a strange object at the edge of our solar system?
Huge thanks to:
Prof. Konstantin Batygin, Caltech
Prof. David Jewitt, UCLA
I had heard about Planet 9 for a long time but I wondered what sort of evidence could support the bold claim: a planet at the very limits of our ability to detect one, so far out that its period is over 60 times that of Neptune. The planet 9 hypothesis helps explain clustering of orbits of distant Kuiper belt objects. It also explains how some of these objects have highly inclined orbits - up to 90 degrees relative to the plane of the solar system. Some are orbiting in reverse. Plus their orbits are removed from the orbit of Neptune, the logical option for a body that could have ejected them out so far. The fact that the perihelion is so far out suggests another source of gravity was essential for their peculiar orbits.
Special Thanks to Patreon Supporters:
Alfred Wallace, Arjun Chakroborty, Bryan Baker, Chris Vargas, Chuck Lauer Vose, DALE HORNE, Donal Botkin, Eric Velazquez, halyoav, James Knight, Jasper Xin, Joar Wandborg, Kevin Beavers, kkm, Leah Howard, Lyvann Ferrusca, Michael Krugman, Mohammed Al Sahaf, Noel Braganza, Pindex, Ron Neal, Sam Lutfi, Stan Presolski, Tige Thorman
Music from "Observations - From Now On" "Magnified XY"




  • they should name it despacito

    HappylittledoggyHappylittledoggy16 ชั่วโมงที่ผ่านมา
  • Call in Sheldon and Koothrappali

    Hamza ZahidHamza Zahid2 วันที่ผ่านมา
  • How the hell Do astronomers discover other planets LIGHT YEARS AWAY but they can’t find a planet supposedly in our OWN DAMN SOLAR SYSTEM?!! WTF...

    trev1978trev19782 วันที่ผ่านมา
  • They should totally name it Vulcan

    tsygankotsyganko3 วันที่ผ่านมา
  • They should name the 9th planet George Floyd

    TheHolyRKTheHolyRK3 วันที่ผ่านมา
  • this is bs! the kyper belt has been known for years!

    Neil JerzynekNeil Jerzynek3 วันที่ผ่านมา
  • the beginning is the big bang, not 1781!

    Neil JerzynekNeil Jerzynek3 วันที่ผ่านมา
  • I’m thinking he’s on cloud 9

    Bladerunner BluesBladerunner Blues4 วันที่ผ่านมา
  • we have 9 planets in our solar system.

    Mr SinghMr Singh4 วันที่ผ่านมา
  • When I grew up it was planet X. Rip Pluto

    Daniel DelkDaniel Delk4 วันที่ผ่านมา
  • Isn't it possibile the planet 9 is a weight lost tiny black hole? Black holes can lose their weight by Hawking radiation. Could it be one of them?

    zeneszpeterzeneszpeter4 วันที่ผ่านมา
  • I believe there are 11 planets according to Quran

    sami saeedsami saeed4 วันที่ผ่านมา
  • Alright, so I might sound really stupid saying this, but I think that when we found a 4000-6000 year old Sumerian artefact depicting our solar system really accurately (including some of the larger moons) and it also shows a 9th planet way out there, we should take that pretty seriously. I believe they called this planet Nibiru, or something? I don't know much about it, other than that they for some reason believed it would cause some sort of godly catastrophe for Earth. Personally I don't believe we were visited by aliens or anything like that. However, I do believe we once used to have a really sophisticated and technological society here on Earth that may have even matched ours today. After all, there are very old stories that describe both the explosion of nuclear weapons and the radiation sickness following it afterwards creepily accurately. And don't forget about the massive catastrophic flood that occurred thousands of years ago described by pretty much every single culture that ever lived. But I won't go down that rabid hole right now. I do conclude one thing from it all, though: we cannot deny that our ancient ancestors had knowledge that they weren't 'supposed' to have. And a lot of that knowledge has disappeared throughout the years, sadly. I personally believe the fall of the Library of Alexandria is perhaps the biggest loss humanity has ever suffered.

    darkaquatusdarkaquatus4 วันที่ผ่านมา

    Charlie MayCharlie May4 วันที่ผ่านมา
  • Planet 9 is still trying to come back home from getting milk after like 80,000 years

    KGBKGB5 วันที่ผ่านมา
  • We need an astronomy station on the back side of the Moon.

    Glenn NileGlenn Nile5 วันที่ผ่านมา
  • Of course it exists. Conspiracy theories say it is there. The unbiased evidence is overwhelming but how do I make money when it is finally discovered?

    Glenn NileGlenn Nile5 วันที่ผ่านมา
    • It could be a black hole not a planet

      aT x dxstinyaT x dxstiny4 วันที่ผ่านมา
  • I wonder if JAMES WEBB will makes this search any easier?

    George NelsonGeorge Nelson5 วันที่ผ่านมา
    • He certainly won‘t. He died 28 years ago.

      Feiner FugFeiner Fug4 วันที่ผ่านมา
  • 11:20 "and at a detailed level you have to go to the computer simulation" alright, let's discover a planet! _fires up Universe Sandbox²_

    bruchpilot747bruchpilot7475 วันที่ผ่านมา
  • I know this guy is really smart but like... His shirt makes me feel smarter than him.

    Dylan BeckDylan Beck5 วันที่ผ่านมา
    • LA citizen being a local group fan?

      TommyTommy5 วันที่ผ่านมา
  • What Mr Kuiper belt doesn't explain is that the gravitational pull on Neptune it what caused Scientist to look for a planet in the 1930s which is why they thought they had found it with "Pluto" So whilst this Guy is responisble for furthering our knowledge and indirectly for pluto's demotion to dwarf planetoid and is indeed an extremely prominant Astronomer it still doesn't explain the gravitational pull on Neptune which was the anomilie that led people to search for a 9th planet back in the 1930s. Astro physicist have esimated that the deviation of Neptunes orbit would need to be caused by a large body such as a "Gas Giant planet 5-10x the mass of Earth. . If it is out there and on a 10,000year orbit and is currently too far away we might get a look in about 5000years

    Lamster66Lamster665 วันที่ผ่านมา
  • Is it odd for me to comment that we have both the Kuiper Belt and the Oort Cloud floating out there, the mass of the former being 10% of the Earth's, and the mass of the latter being 5 times that of the Earth. Who knows the actual mass of these objects, but were they to coalesce, there would be a planet roughly equivalent to one Earth out there. This is the atmosphere of the solar system. I suppose one day we could launch a large number of drones into the outer solar system and program them to alter the trajectories of these objects so that they coalesce. But it would probably be like condensing the Earth's atmosphere into a solid object, which would certainly make our system inhospitable. If there is a very large planet out there, it might have altered our system to make it less hospitable.

    Joesph YoungJoesph Young6 วันที่ผ่านมา
    • @Joesph Young hmmm. I doubt it but anything is possible at this point lol. I was thinking it could be more of a primordial black hole with the mass of a planet and the size of a tennis ball.

      aT x dxstinyaT x dxstiny3 วันที่ผ่านมา
    • @aT x dxstiny yes, and it could be orbiting our star so quickly that no instrument can detect it, encasing our system in a time bubble that separates us like wildlife preserve from the rest of a galaxy teeming with interplanetary civilizations.

      Joesph YoungJoesph Young4 วันที่ผ่านมา
    • It could be a black hole not a planet

      aT x dxstinyaT x dxstiny4 วันที่ผ่านมา
  • Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, David Bowie.

    The NooB LyfeThe NooB Lyfe6 วันที่ผ่านมา
  • Dennis Reynolds with Superman hair

    Stephen CStephen C6 วันที่ผ่านมา
  • Second dude (Jewitt from UCLA... who is just jealous he couldn't get a job at CalTech) is a complete asshole and absolutely unqualified to be speaking on the matter given that jackass response. Never mind the vomit inducing camera work.

    Same As It Ever WasSame As It Ever Was6 วันที่ผ่านมา
  • David Bowie definitely gets my vote!

    C ColeC Cole6 วันที่ผ่านมา
  • Nibiru, lol. Or at least a dense asteroid field on very long elliptical orbit. a This is what causes the 11k year cataclysm cycle.

    C ColeC Cole6 วันที่ผ่านมา
    • Could be a black hole out there

      aT x dxstinyaT x dxstiny4 วันที่ผ่านมา
  • Ya it’s pluto

    Roblox Fun with RayyanRoblox Fun with Rayyan6 วันที่ผ่านมา
    • It could be a black hole

      aT x dxstinyaT x dxstiny4 วันที่ผ่านมา
  • Pluto will always be planet 9 as far as I'm concerned. And they're looking for planet x because they don't just think it's real they know it's real. The world as you know it is a lie. The truth it's far crazier than your mind can even fathom.

    Erik SeaveyErik Seavey7 วันที่ผ่านมา
    • What's the point of language if you're going to ignore all definitions at a whim?

      TezZTezZ7 วันที่ผ่านมา
  • I would keep the name of planet 9... Planet 9. Its a codename now but its sounds alien-like.

    Nota RobotNota Robot7 วันที่ผ่านมา
  • Its a Planetary System. P.S. we are off orbit.

    David GatesDavid Gates8 วันที่ผ่านมา
  • Plus it was writen on the walls of Every Ancient Civilization around the 🌎. It is also the reasons for all the Random Flooding around the 🌎 and the Giant Magma Plume under Yellowstone.

    David GatesDavid Gates8 วันที่ผ่านมา
  • Not so smart. How about its been by the 🌞 since before February 2019. Plus it is pulling on the 🌎's core. Hence the uptik in 🌎 quakes.

    David GatesDavid Gates8 วันที่ผ่านมา
  • if planet X’s orbit is once every 10,000 years, what portion of those 10,000 years does planet X remain in our immediate solar system. in other words, when/if it ever returns for another orbit, how many years will the planet itself be visible in our solar system before it exits.

    OmgLolWtfxD xOmgLolWtfxD x8 วันที่ผ่านมา
  • Everyone is asking "where is Planet 9" but nobody's asking "how is Planet 9". Poor Planet 9 😢💔🌍

    fschuttfschutt8 วันที่ผ่านมา
  • They had a planet nine. They discarded it. They don't deserve another.

    Jack MasonJack Mason8 วันที่ผ่านมา
  • It could be a ninth planet it orbit could be 20 thousand years and it way out there and it may be orbit back this way

    Willie LeeWillie Lee8 วันที่ผ่านมา
  • I Love the anomalous motion of Uranus.

    frankster200frankster2008 วันที่ผ่านมา
  • Pluto in the background: :(

    Papi Siren HeadPapi Siren Head8 วันที่ผ่านมา
  • the fact that he is fine with naming planet 9 davidbowie makes me think this is a giant hoax

    Rugantio CostaRugantio Costa9 วันที่ผ่านมา
  • How to find Planet Nine and … Ten, Eleven and Twelve via Joseph dream. 12 Planets Hypothesis of how Book of Genesis and Quran can help find 4 new planets in the Solar system through finding the Joseph Planetary Configuration (JPC):

    Hypotheses XVHypotheses XV9 วันที่ผ่านมา
  • When this Batygin guy finally find planet 9, he should take a huge dump on that old man's desk and then put a sign saying, 'planet 9 bitch'.

    DeadTroperSocietyDeadTroperSociety9 วันที่ผ่านมา
  • I'm sorry but the Old guy sounds like a douchebag.

    DeadTroperSocietyDeadTroperSociety9 วันที่ผ่านมา
  • Have slime mold map out the dark matter around the area in our solar system and you might find what you're looking for, or at least have a better idea of where to look for it.

    Christopher TochalauskiChristopher Tochalauski9 วันที่ผ่านมา
  • Gerard kuiper is the guy that found the kuiper belt

    Shivankr27Shivankr279 วันที่ผ่านมา
    • No he wasn‘t. He predicted it.

      Feiner FugFeiner Fug9 วันที่ผ่านมา
  • the 9th planet is actually the eye of the universe

    MisterPikolMisterPikol9 วันที่ผ่านมา
  • naming planet 9 David Bowie is really dumb but also humanly funny . our space grandkids might assume David Bowie is also the name of a Roman god and they'll have to learn a minimum about experimental 70s rock/pop

    KoburaKobura9 วันที่ผ่านมา
  • The ancient Sumerians told of this planet which they call Nibiru.

    Thomas KerstingThomas Kersting9 วันที่ผ่านมา
  • This is that same university that sucks at basketball

    Austin LAustin L9 วันที่ผ่านมา
  • Until we can travel the solar system efficiently, then its existence does not matter.

    badreality2badreality29 วันที่ผ่านมา
    • @aT x dxstiny True, but what is the point of traveling that fast, if the braking technology is not there yet, let alone returning a spacecraft? It is good to prove a theory, but not much else.

    • @badreality2 we can if we know where is it. We can send satellites to orbit it. Gather information. We know next to nothing about black holes. This would be a gateway to learn about them. We could also possibly learn how to use the halo drive method of travel using this theoretical black hole. Meaning if it was powerful enough (which it probably isn't ) we could use it to get to other star systems relatively fast

      aT x dxstinyaT x dxstinyวันที่ผ่านมา
    • @aT x dxstiny Yeah, I know how much can be learned from a black hole; how to bend space-time. But, we won't be able to study a black hole very well, out in space. ...rumor has it, that CERN is already doing just that, but not publishing the results. Look up "John Titor, 2001 time traveler"; skip anything associated with "Stein's Gate".

    • @badreality2 I'm talking in terms of learning more things about black holes. Considering how close it'll be compared to the rest scientists could use it to study black holes. You'd be surprised how much they could learn from one tiny black hole.

      aT x dxstinyaT x dxstinyวันที่ผ่านมา
    • @aT x dxstiny What kind of information? Only Hawking radiation leaves a black hole.

      badreality2badreality22 วันที่ผ่านมา
  • Beautiful and impossibly beleavable there are 3 more planets to descover this looks like an exelent step forward

    誰かDareka誰かDareka9 วันที่ผ่านมา
  • The sumerians said it existed, why are we so surprised?

    Delete eliteDelete elite10 วันที่ผ่านมา
  • This is better than bright side theres a big difference bright side is clickbait and it scares people veritasium is original and not scary

    Christie BergeronChristie Bergeron10 วันที่ผ่านมา
  • 9:27 we have never seen a planet like that, but wouldn't it be even more difficult to see a planet like that in an other solar sistem? that would explain it , i meen if i'm not wrong most of the planets in other solar sistem are discovered by discontinuations on the brightness of the star caused by the planets orbiting around it, that would be very improbable to happen with a planet of these characteristics

    Gabriel GarciaNaGabriel GarciaNa10 วันที่ผ่านมา
  • yes, planet 9 is real! its pluto!

    john72ssjohn72ss10 วันที่ผ่านมา
    • How about you get over your boring unoriginal self?

      Feiner FugFeiner Fug10 วันที่ผ่านมา
  • "Something" They dont know what that something is because their Lord Einsteins Gravity scheme can not explain it . Yet they are not allowed to doubt it , only add more math stuff that doesn't exist . In their Universe Mathematical model is reality , the way you understand stuff is by fudging the numbers in CGI model , and when you make it work , then you understood it . However this does not constitute understanding by any Common sense , but why should we care when we get funding for it non the less . I was naive once as well , i though they do research , that they want to know , but its not like that , they are not allowed to think , to say anything that is not in the SACRED BOOK , the Bible the Theory of Relativity . And its all becouse Vatican has a huge interest in it all , its not a coincidence that Vatican formed their Big Bang Theory . It was the Vatican priest that told Einstein what to put in his theory . Its all planed , its their agenda to keep ppl blind to real nature of universe we live in which is not even close to Big Bang . Its the oposite , everything is one , and one is everything . You are the universe , you are God . This they can not allow to be mainstream . Because The Pope is God not you or me , its the Pope . Ppl need to wake up . Not only that God Exists , its You , its not the Pope , its not Jesus , or Allah , its you .

    Pavle PavlovicPavle Pavlovic10 วันที่ผ่านมา
    • @Rrit Chakraborty No crack pot ideas are Big Bang , dark flow , Space time Curvature , , dark energy .. Ultra massive mega giga black hole and things . These are crack pot ideas , that spin day after day in Mass media , children barely able to walk are brainwashed with these . I can show you a recording i have for my Documentary where they brainwash kids with black holes they cant even read properly yet ,they forced to sit down in front of camera and read this all day . That is how adolts turn up the way they do , brainwashed from the get go When they hear the truth later on they thing its crack pot idea . that is what is going on .

      Pavle PavlovicPavle Pavlovic8 วันที่ผ่านมา
    • then as God, i command you to quit smoking crack

      Rrit ChakrabortyRrit Chakraborty8 วันที่ผ่านมา
  • ye there is a planet beyond neptune, its called pluto

    Michael GeraghtyMichael Geraghty10 วันที่ผ่านมา
  • Planet 9 is roaming the solar system and its still being investigated by astronomers or astronaut

    Cool Boi Playz_RBLX303Cool Boi Playz_RBLX30310 วันที่ผ่านมา
  • Update: after considering the observation biases and correcting for them, one scientist says the observations do not hold up the hypothesis that Planet 9 exists:

    meowsqueakmeowsqueak10 วันที่ผ่านมา
  • hmmm... ninth planet? HAVE YOU HEARD OF PLUTO?

    RigbyRigby11 วันที่ผ่านมา
    • Just get over your boring, unoriginal self.

      Feiner FugFeiner Fug10 วันที่ผ่านมา
  • i love this man. but i'm not sure if it's because of his hair and t-shirt but even without the two, i would still like this man! LOL

    infinity251214infinity25121411 วันที่ผ่านมา
  • На Солнечной системе идёт планетарный изминения поники бояаться

    Suleyman EliyevSuleyman Eliyev11 วันที่ผ่านมา
  • Учёные Астролыгы боятся сказать правду магнитный полюс меняется Глворити Планета земля вращается увидем ближайшее месяцы или нет

    Suleyman EliyevSuleyman Eliyev11 วันที่ผ่านมา
  • Gravity and whirlpools in general are unpredictable. Does that celestial body exist? Absolutely.

    Larry BoothLarry Booth11 วันที่ผ่านมา
    • Could be a black hole.

      aT x dxstinyaT x dxstiny4 วันที่ผ่านมา
  • (Names planet nine ‘David Bowie’) Pluto: “Oh you got to be f%#cking kidding me.”

    cameron duncancameron duncan11 วันที่ผ่านมา
  • Ik this is rude, but where is his forehead?

    Mr.Dud3Mr.Dud311 วันที่ผ่านมา
  • We've taken a photo of a black hole light years away. "hey so where's planet 9?" "that's a great question"

    The Ginger VikingThe Ginger Viking11 วันที่ผ่านมา
    • "Planet 9" could well be a black hole

      aT x dxstinyaT x dxstiny4 วันที่ผ่านมา
    • You sound as if you doubt that this is a great question. Why?

      Feiner FugFeiner Fug10 วันที่ผ่านมา
  • This extremely intelligent professor at Caltech just said “guesstimate”

    bloodrune329bloodrune32912 วันที่ผ่านมา
    • So it's a real word now?

      The NooB LyfeThe NooB Lyfe6 วันที่ผ่านมา
  • How could it have such an orbit without external influence? Makes me wonder, you know that wall of plasma the Voyager probes found? What if this mystery planet is getting pushed back or "bouncing" off of that barrier? Repulsed, I suppose would be the term. Just a thought. Might give a direction to look in, since we know where the probes encountered that barrier.

    GoattacularGoattacular12 วันที่ผ่านมา
  • The dislikes are aliens who got pissed because their planet was found.

    The Shenanigans show!The Shenanigans show!12 วันที่ผ่านมา
Does Planet 9 Exist?