Planet Nine: Our Solar System's Missing Planet?

[@geographicstravel]

Check out Squarespace: squarespace.com/GEOGRAPHICS for 10% off on your first purchase.

[@anarchyantz1564]

Nibaru melted away like snow with a bic lighter. Don't worry Simon. Your home world is safe..........for now! You keep your secrets but you can see all the FACTS when you listen to Danny's scripts. There is a code in there, when you read it backwards on alternative pages and paragraphs, certain words and phrases stand out telling us about your Reptilian home world and your plan for world domination via youtub... *CRASH* NO! NO! The world must know the truth! The world must know the...t.r.. As Simon has said, there is nothing to worry about. All is calm All is calm All is calm All is calm.

[@ZACHTARK]

I'm putting a fuel pump in it now

[@--enyo--]

Has there already been a Megaproject on the Vera observatory in Chile? If not can we have one? I’d never even heard of it despite it sounding like a huge achievement.

[@chronosschiron]

im not gonna lie i took it, thought it was a big beach ball i could play with during pandemic

[@chronosschiron]

MUST hear scream .....must hear scream

[@cypherbrittainnethegodofsl4988]

Random fun fact : Neptune has two of the farthest moons from their parent planets. They are Psamathe and Neso. Psamathe is around 0.312 AU from Neptune and needs around 25 Earth years to orbit Neptune. While Neso is around 0.33 AU and needs around 26 to 30 Earth years to orbit Neptune. Their distance is comparable to Mercury's distance from the sun which is around 0.387 AU.

[@PeasantReaper]

I would have guessed it would have been a Jovian Moon due to its large gravity well. very fascinating

[@Cailus3542]

0.312 AU? Seriously? At that distance, you'd barely even be able to see Neptune as anything besides a blue star rather than an actual planet. Dang. It makes a degree of sense, I guess, since there's nothing nearby to disrupt those moons' orbits and so they can end up with such loose orbits, but still, wow.

[@PeasantReaper]

@@GH29111 just checked wiki and did the math and it's true! They are "irregular moons" and even orbit in the opposite direction of the other moons of neptune

[@JSJSpeaks]

Hey! Keep up the fun facts, c’est tres excellent.

[@patrickday7689]

@@PeasantReaper let's see the math

[@generalbutterscotch4887]

Imagine if after all this time it just turned out that Pluto was way more dense than we thought

[@sizanogreen9900]

Impossible. But would admittably be pretty funny.

[@DsVs]

I want pluto to be a planet again so bad it's ok if it's as a dense himbo (i know this comment is unacceptable so ill see myself out)

[@MarsJenkar]

Would've been funny, but New Horizons would have shown the extra density if it was really there.

[@myaccount2400]

@@DsVs nobody cares

[@kipter]

It wouldnt matter because its declassification was arbitrary and political anyway

[@Hiddenus1]

Till proven to exist Planet Nine should be called Planet Nein.

[@russellfitzpatrick503]

NO!!

[@harleywright2835]

Lol

[@Spartan265]

Agreed.

[@JRockySchmidt]

I prefer Rupert

[@missmusica82]

Well played!

[@Smol_Turtle]

I wanna know what Galle was thinking after finding Neptune in an hour like: "Huh, well damn, I guess it was there."

[@Cosiek7]

,,Man I'm good."

[@Hykje]

"Was that it? -What am I going to do now?"

[@sizanogreen9900]

"What kind of strange shroom did the cook put into my soup this time?"

[@allewis4008]

Probably after spinning the telescope around like Bart Simpson

[@graceneilitz7661]

He was told the location by a mathematician friend.

[@anarchyantz1564]

You have to admit though the drawing of that Rhino based only on written information and back in 1515 when some then could not even draw a human right is astonishing.

[@PrezVeto]

I knew they had to just be phoning in every other drawing! Lol I just can't believe they couldn't figure out how to make depth look right.

[@ryanhill6684]

That was just the style of art back then. People were more than capable of art that is insanely lifelike

[@IceniTotalWar]

@Leroy Brown Oh yeah and what's wrong with Matchstick Men & Cat's & Dogs 🤔😁

[@Godwin420]

I bet more indoctrinated sheep of electronic media and general BS today would be hard-pressed 'to draw a human right' than those fine folks of 1515...

[@view1st]

To me, up until the Renaissance and persisting in many places throughout the 17th and 18th centuries, European artists painted like children, their art quite amateurish. What's more remarkable is that this apparent amateurism persisted in some places well into the 19th century! The Chinese are only a little better. Like, why did it take so long to discover perspective and naturalism/realism? The most striking example, in my opinion, is Byzantine religious art (and Christian art in general). It's like the ability to depict the world accurately suffered a serious decline after the fall of the Western Roman empire.

[@jessigraphiel9048]

"Our sun stole it" I don't know why but I bursted out laughing when he said that.

[@LadyBeyondTheWall]

It'd be just like our sun to be roaming around other neighborhoods stealing other star's planets! It is like one of our parents after all and children learn from parents. 🤭

[@ejosjek52.87]

@@LadyBeyondTheWall its Fun

[@ajstevens1652]

@@ejosjek52.87 Not the brightest thing you've done though.

[@ejosjek52.87]

@Error where did u get the pfp?

[@ejosjek52.87]

@Michael Horton always has been

[@Kenzie.Avrahm.Fraser.Gelbart]

Simon clearly needs an astronomy channel now too.

[@loudnoise4690]

In the 1970's I was a member of the Science Fiction Book Club. One of the books I got was a collection of short stories whose title I don't remember. There was one halfway decent story in it that was written by someone I also don't remember. The story was built around the fact that a scientist found Planet X and, using advanced, state-of- the-art experimental 2015 spacecraft, set out to visit it. As things turned out is was a Dyson Sphere built around a red dwarf (which makes sense now that I think about it). The RD had spent itself millions of years ago and the entire thing drifted into our neighborhood to hang around for a couple of million years.

[@dk-fk4xm]

That ending is basically 'Planet 9 is the friends we made along the way'.

[@nin469]

Spoilers!

[@VineyardGHS]

Your comment is the most films down so it appears first in the comment list thanks for the spoilers scumbag

[@userloser4553]

^ like its Game of Thrones or something. Chill

[@scottydu81]

If they name the next planet “Vulcan”, they *have* to call it’s first moon “Nimoy”

[@HeartbeatCN]

But that's the name for the hypothetical planet that's supposed to be closer to the Sun than Mercury. Einstein himself disproved "Vulcan". Planet X, The one beyond Neptune, is a distinct theory from it.

[@johnr797]

@@HeartbeatCN I like Quirinus, "the spear holder", because he was poking Neptune into a slightly irregular orbit.

[@davenettlesmusic2954]

@@HeartbeatCN Check out MRMBB333, he has a video of what appears to be a planet in the edge of the Sun's Corona.

[@davenettlesmusic2954]

@John Barber Yes, Spock indeed.

[@ejosjek52.87]

Vulcan Lol wow how would it be vulcan if its far away and barley gets any sunlight and has no volcanoes since its a ice giant

[@ignitionfrn2223]

1:30 - Chapter 1 - The missing world 4:50 - Chapter 2 - Secret worlds 8:20 - Chapter 3 - Myths & legends 11:35 - Mid roll ads 13:00 - Chapter 4 - Planet 9 15:40 - Chapter 5 - The invisible world 18:55 - Chapter 6 - A mirage in space

[@Kiki_Wi_]

Ty

[@ligmaphotons]

Legend

[@veronviper06]

@@PlasmaStorm73N5EVVfirst, these ones are auto generated, and second, they didn’t exist when the video released

[@disclaimer.imjokin]

​@@veronviper06third... 2 years on you read this back... you still a bellend??

[@BlastinRope]

Pluto watching this: im literally shaking rn

[@JordiVanderwaal]

I'm literally wobbling rn*

[@ejosjek52.87]

Trans neptunian object

[@drboze6781]

2:36 - Professor Farnsworth explained that astronomers grew weary of all the jokes about Uranus and so renamed it Urectum.

[@Christopher-N]

_Eagle 5_ : "I ♥ Uranus"

[@chillcannongames5758]

No no. "Urectum."

[@trybeanpole1873]

Don’t use the smelloscope on that one.

[@mridlon1634]

@@Christopher-N Starfish: This is Starfish calling Eagle 5! Starfish calling Eagle 5!

[@Christopher-N]

@@mridlon1634: Starfish to Eagle 5-don't remember. Which one is that from?

[@CornPopsDood]

I’m not that old, & Pluto was a planet when I was in school.

[@joshallen5316]

If it was a planet you are old

[@CornPopsDood]

@@joshallen5316 Not even half as much as you’d like to think know it all. You realize that’s only become an argument in less than 2 decades right? I might be old enough to be your daddy, but I’m still plenty able to whoop that ass without a problem. Nice try smartass, but you’re far from ready to take this on big boy. Go on.

[@martinmackye9865]

@@CornPopsDood carry yourself with more gravitas and sense of self old-timer.... You sound insecure about your age.... Having the exact opposite effect you were going for....

[@CornPopsDood]

@@martinmackye9865 Your entitled to an opinion. Nobody gives a fuck though. Getting old is a gift. Being an idiot is a choice.

[@Desyx14]

@@joshallen5316 Kid you know Nasa has never stopped considering it a planet right? Like, cornpop might be rude, but he's right. Idiocy is a choice. If pluto isn't a planet, neither is earth. We fail the exact same test the IAU put pluto to.

[@Lagul_4]

Great work on all 84,000 channels as always, Simon! Could you consider a video on Venus? I always found it deeply fascinating (more so than Mars); beautiful yet hellish.

[@anothernumber9753]

There once was a lady from Venus Who's body was shaped like a penis When First Contact was made The crew were dismayed When she told them her species and genus.

[@phantomechelon3628]

One day KZbin will simply be known as WhistlerTube.

[@mikoto7693]

I find Mars so fascinating, sad and oddly beautiful. That if things had been a little different it could have held water, could have developed and kept life. We could have had Martians.

[@Ceyrenn460]

It's obviously a Mass Effect Relay way out there that we haven't seen yet.

[@dango6266]

That'd be epic until you realize that means Reapers exist.

[@thedwarvenking8127]

Time for the great shepherd to arrive and save the day

[@blackzali8061]

3.47 am for me

[@sophroniel]

Oh no Reapers

[@STG44musikmeister]

@@sophroniel We have dismissed that claim.

[@piermariobarozzi]

"Hello my name is Georgium Sidus" "Hahahahaha Uranus"

[@PhantomLover007]

Ha ha ha. Ur n ass. 🤣🤣🤣

[@Christopher-N]

Place _Spaceballs_ bumper sticker here.

[@viperzang6923]

"Uranus" Greeks and their Gods, amirite? 😏

[@dieSpinnt]

@@viperzang6923 Nope, it is the latinization of ancient Greek οὐρανός uranós, what means: 'heaven'. Just uninformed english speakers (like in the video) have a childish laugh about this(or mention this), because it isn't even an english word. How much "funny" words do you think exist, when we iterate over the existing 7.102 and the 9.000 dead languages in all combinations and words? That would be a really interesting scientific research for a childish and dumb topic:)

[@michaeljones7465]

Palaemon has been photographed.

[@stantheman9072]

When Simon one day breaks the internet due to quality overload, we can justifiably say a hearty, “Well done, sir!”

[@DiracComb.7585]

A hunt that really exemplifies the adage, “ It’s not about the destination, but the journey.”

[@scottydu81]

The *real* Planet X was the friends we made along the way!

[@michaelw6422]

Or maybe the real friends were the planets we x’d along the way… 🪦 Pluto

[@Christopher-N]

A hunt is as much about the thrill of the pursuit as it is about the meat, to a Klingon.

[@viperzang6923]

@@scottydu81 The *real* Planet X was the Black Hole we found along the way. FTFY

[@KEVMAN7987]

Planet X: Pluto's Revenge "The dwarf planets are out there, and they're pissed."

[@BlueViper8907]

When Simon starts to bring up conspiracy theories. Me. Anxiously awaiting for the theory of the Lizard people from Nibiru living in the hollow earth beneath us with our solar systems second 'missing' star. Me later in the video. I was not left wanting or disappointed. Like clockwork Simon, I love it. Thank you!

[@josvercaemer264]

You forget the j*****h space laser controlled by the alluminati being housed on the grassy knowl

[@Jaytwisty23]

These me them so called jokes in comment sections have ran their course, they're not funny anymore

[@yujirohanma5199]

@@Jaytwisty23 nobody was joking.

[@tthappyrock368]

...and a craving for Scooby snacks😊

[@heygek2769]

Man, Einstein's theory dunked on so many other theories in all areas of science, crazy.

[@unclebrat]

Newton was already familiar with the problem of Mercury's orbit.

[@slcpunk2740]

That's how he decided what to do his theory on. It was the center of the dunking Venn diagram. He also taught Cadbury how to get cream into eggs. 🤫

[@mynameisjoejeans]

I think Einsteins theory is why everything is behaving outside of our models now tho. Astronomers are claiming 98% of the universe is invisible, dark matter and dark energy are undetectable but everywhere, and now TNOs acting funny - a simpler explanation is that our current theory of gravity is only accurate on a solar system scale, similar to how Newton’s was only accurate on a planetary scale. Just as an inaccurate theory forced us to invent Vulcan, Einsteinian gravity is forcing us to invent tonnes of stuff at large scales.

[@x_8643]

They should name it Pluto Jr., in honour of the OG ninth planet.

[@mizzshortie907]

I vote yes

[@MajorOutage]

They should reinstate Pluto as a planet, in honor of itself. It's OK to change the qualifications for allowing new planets. But Pluto was grandfathered.

[@donkeysaurusrex7881]

@@MajorOutage If you use the definition used to disqualify Pluto from planethood, earth isn’t a planet either.

[@evos469]

@@MajorOutage NASA still classifies it as a planet. Most of the IAU aren't qualified to make the determination of what a planet is. Most of planets in SOL aren't planets since Jupiter and the sun's gravitational pulls effects everything.

[@ejosjek52.87]

Nu

[@juliadagnall5816]

I read a book written by Mike Brown and it helped me appreciate how much of astronomy is having access to the right equipment at the right time with the right weather conditions. When he first started searching for TNOs his team was using an outdated analog telescope that still used photographic plates instead of digital technology, but that was actually a good thing because while digital cameras are really good at capturing focused images they’re not as good at long exposure wide shots which is what you need if you’re taking pictures of a large area and basically eliminating everything you know can’t be a planet. Of course digital technology has advanced a lot since then, but I thought that was really cool.

[@introvertednoise]

Simon’s beard probably had its own gravitational pull. It’s glorious, my goodness!

[@fefelarue2948]

He has his own beard oil line.

[@rangerg7278]

Sometimes, Simon, you get a subject where you and your team are all "top shelf" in production and presentation. The idea of the value in a search (based on best, or at least reasonable, information of its time) for what may well be not there I believe to be one of our better human traits. Well done! Ranger G.

[@caza9758]

I was heading to sleep, but I can't miss such an interesting topic

[@DrakeWarriorIgonHarpooner]

Saaaaaaame

[@bryanestrada8599]

Me 2

[@kurtiousmaximus7130]

Same

[@HarryNicNicholas]

i had insomnia but this cured it.

[@DavidandShirley]

Yep!

[@immortalsofar5314]

Phew, I didn't realise this channel was yours Simon. I clicked with my finger on the back button half expecting a scary-voice in-a-world narrator telling me it was "lurking" somewhere. Thank goodness for that, I can now watch in peace and, probably, actually learn something.

[@n0lanv0id]

JUST sat down with my coffee - perfect

[@terryoconnor5262]

I would really like to hear more about the Vera C. Rubin observatory, it’s seems quite the undertaking… a mega project, as it were

[@TurquoiseInk]

That would be a video I would watch.

[@LovinLyfeA2Z]

Thank you for this! I just started getting into astronomy this week and last night I was talking with my daughter about planet 9.

[@robertgotschall1246]

Excellent, I had vaguely wondered about the relationship between Planet X and Planet 9. This reminds me philosophically of the things we discovered looking for The Northwest Passage.

[@cripplegunsmith1]

That is a great comparison. And so many things discovered along the way!

[@sloshed-rat]

Yeah, there was a ninth planet. It was called Pluto, and we didn't appreciate how cool it was.

[@tirex3673]

this is Pallas erasure

[@terrybardy2848]

Make Pluto a planet again!

[@reecetaylor2626]

@Leroy Brown then our solar system has dozens of planets. Im not at all against that, but we gotta be consistent

[@reecetaylor2626]

@Leroy Brown pog. Pluto is a binary planet system now

[@reecetaylor2626]

@Leroy Brown no clue. I just roll with the joke

[@rangeldino2633]

In elementary school I hold a presentation about Sedna. Our teacher back then made 9 groups in the class (I think it was 2004), each of which should make a presentation about one of our planets in the solar system. I do not remember which group I was originally assigned to, but I remember that I googled a little bit around and learned about Sedna being named the tenth planet. So I asked my teacher to do an presentation about that one instead, so that really all known planets are represented :D Guess I got really excited about it because even she did not know about it. And back then my teacher was omniscient for me. It was also really interesting to learn the little which was known about Sedna, so interesting in fact that I started to love doing presentations alltogether. I made a lot of presentations in elementary school, some were seriously large, I think my longest talk took over 90 minutes then, about the roman empire. That one I presented three times, because my teacher was so impressed (or, looking back, maybe I was a good way for her to have a break ^^), once to my class, once to the other three classes of my grade, and once to the visitors of the schools summer festival. Maybe that benefited my tutoring skills after all, even though I never aimed to be a tutor I have been doing it for the last 4 years now, first university students, now medical facitlity workers and software technicians. So the search for Planet Nine or at least Sedna has influenced my life quite a bit, too, even though I had absolutely nothing to do with it :D

[@KuriusOranj]

Nice work! While watching videos about our solar system, I think about the project I did in grade 7 about Jupiter. That was in 1979. I expect that it isn't quite as accurate as I thought it was back then.

[@ADRMajestic12]

Do we not talk about Pluto anymore or is it the distant uncle that never gets invited to family gatherings!

[@ejosjek52.87]

Still talk. about it

[@ADRMajestic12]

@@ejosjek52.87 ok it is still a planet.............there i said it!

[@CosmicValkyrie]

Pluto gets invited to the family gatherings of dwarf planets, not planets.

[@ejosjek52.87]

@@ADRMajestic12 atleast call it a Trans neptunian object

[@ADRMajestic12]

@@ejosjek52.87 or just a planet, which is easier............and correct

[@churchofchris1973]

The best part of Simon's shows is hearing the difference between British and American English.

[@Eden-xz9fy]

This is by far the best Geographics video I have watched. More topics like this please.

[@channingsmith3575]

This is my favorite Geographics yet. Thank you!

[@Yupppi]

What wasn't mentioned here, is that the group of scientists who found those tno's suspect the planet nine might be circling sun in a totally different direction as the others. Sort of "vertical" which is very uncommon. That also makes it really difficulty to predict its position to search for it.

[@ninoscholz1110]

I'm 43, and got a brief fear reaction when you showed Michael Jackson's girlfriend screaming. Your clip is directly after the yellow eyes "Go away" part that had me freaking as a kid lol

[@Dirtyburke]

Absolutely one of my most favorite videos to date. Damn Simon. You hit it out of the park with this one!

[@bobbytreez5615]

I’m currently an undergraduate Astronomy student and I accidentally solved the “Planet 9” mystery. Beyond a hypothesis, I can’t disprove it and all my simulations are on point. My research paper will go with my PhD application before it’s published though. I just have to check how much breathing room I have every couple of months. I’ve never commented on an Astronomy video before, but honestly this is the most complete and informative video covering the timeline of this subject. Very fine work man! 👏🏼

[@patrickglaser1560]

Was your dissertation rejected?

[@CaminoAir]

The engineering required to enable the Vera C Rubin observatory to operate (without interference) is astonishing. It's well worth looking up a video on the techniques involved.

[@benclark3621]

We will never forget! Pluto: Planet 9, 1930-2006

[@nunyaok]

Pluto will always be the 9th planet. X has always been the 10th planet

[@runealexander4916]

New drinking game: Take a shot every time Uranus is mentioned.

[@ty1erwood]

Another video with Simon = another good day! Thank you sir!

[@Crytica.]

The most interesting part of this whole video for me personally was learning about Sedna

[@ShadowWasntHere8433]

The only way we’d ever see a black hole that tiny is if we accidentally fly too close to it one time, and it soeghettifies the ship

[@brucehubbard1852]

Simon. There are those that were born with a gift. Your gift was narration. Your tone and pauses and all around structure to how you tell a story is excellent. I just at times just love to listen to you. Keep it up. If you can love to hear the story of silly putty and how it came to be. Little odd but fun history.

[@CannaCJ]

34 moons discovered in the outer solar system within my lifetime. That there were still massive undiscovered objects in our backyard after all this time is baffling. How unprepared we are for the necessary space exodus...

[@yourlordship1119]

I really like the idea of a tiny black hole just chilling around us lmao

[@Quadrolithium]

That will also be a hazard for space travel, it's not easy to detect and 2nd: it messes with star charts, sure you wont get sucked in but you might get lost instead with poor navigation

[@dgdave2673]

That possibility has been already theorized. However issue is based on the gravitational calculations Astrophysicists have come up with for the Planet X or Object X , this black hole can’t be more than the size of a baseball…

[@allewis4008]

It would make sense; a tiny little thing still strong enough to throw space rocks around

[@bushmanPMRR]

"... looks like Uranus..." I'm sorry, I just can't help myself! 😂😂😂

[@elusivelight3766]

Planet X would have been a more accurate name if Pluto hadn’t been demoted. Good video.. ⭐️

[@PGHarchangel]

Well looks like I'm not getting any work done for the next 22 min. Thanks Simon.

[@romemedina4712]

Great having Flagstaff finally called out in a video.

[@silvernova354]

I love astronomy. Thanks for this!

[@permanentvisitor2460]

Awfully glad to see you mention the Vera C. Rubin Telescope project.

[@randybounds2244]

"Plan 9 from outer space" Hey Simon how bout a bio on Ed Wood.

[@Cassie_2182]

Seconded!

[@triton199]

And Coleman Francis after him lol

[@scottydu81]

Do a Megaprojects on Plan 9!

[@tthappyrock368]

Great idea!

[@codidevlugt2153]

"ALIENS FROM...." "Don't say it B-Man." "URANUS!" "Real mature Bradley!"

[@vexile1239]

"Really? Shepard?" "*sigh* probing Uranus"

[@paulmccloud9395]

I understand the science of why, but it still makes me laugh we can see objects at the furthest reaches of the known universe, but we can't find a planet in our own solar system.

[@Nick-ju4lw]

It changes everything when you know where to point your telescope.

[@SuperflyGaming]

Haha gravity anomaly go brrrrrrr.....

[@johnschneider6190]

Light

[@kyleellis9177]

Where are your car keys, remote, wallet, and for people who remember cordless land lines wheres the phone? Yet I can remember which box in my attic has which Xmas decorations when all of them say Xmas. We're weird.

[@LordJaric]

There is a difference in methods. What we use to find exoplanets are telescopes in space watching hundreds of stars, at once, waiting to see if the light coming from them dims, meaning something passed between them and us. Different and easier then what was mentioned it the video as you have to know where to look to try and find it.

[@dylanhimes1514]

As much as this whole video fascinated me, bringing up the Vera C. Rubin observatory and what it’s expected to do got me SO excited for what we might find in the next few years, even besides the (non) existence of Planet Nine. I love coming into videos on this channel, I usually come out of them learning something really cool even when I thought I knew everything about whatever topic the video’s about.

[@PantsuMann]

I cant even comprehend how thick that beard is. Im a bearded man in my early 30's and hoping to the gene gods that it will get that thick. It's majestic, mr Whistler.

[@josvercaemer264]

I'm 43, at your age you should see every hair follical developed or pertruding .But Then again , every body is different

[@Mr.Cerera69]

Try to not to shave for longer period. Every time i dont shave for like a month my hair get thicker and thicker.

[@censored1430]

If it makes you feel any better his lighting set up makes it look considerably thicker though I can't deny his good genetics

[@PantsuMann]

@@Mr.Cerera69 I'm a slow grower- Im currently at around 40mm lenght. It takes me months to get where I am today. But I also have a lighter tone to my beard. I decided in June that I wont touch it in a good while, like december so we'll see where this road goes. I have had longer before, but never thick like this madlad. My coworkers think it's thick enough but they have no idea what I'm comparing to lol I mean, just look at it!

[@scottydu81]

Simon should move all of his pre-beard videos to their own channel lol

[@DianaDeLuna]

I totally did a research paper on "Nemesis Theory in the Periodicity of Mass Extinctions on Earth" (or similar title) in high school! It was 1987 and the theory blew my impressionable teenage mind.

[@ContentDolphin]

HEY GEOGRAPHICS, thanks for the amazing content I've learned many things from you! Thanks

[@cripplegunsmith1]

These videos are better than most college courses!

[@somenygaard]

17:40 A 4th option. It was created right where it sits.

[@pedrolopez8057]

"where are we going?" "Planet 10!" "When are we going?" "Real soon!"

[@cripplegunsmith1]

I love that movie!

[@richardmercer2337]

I once met Clyde Tombaugh! He gave a talk many years ago at our local science museum.

[@zakiducky]

I didn’t know Simon had this channel, too! Lol I can’t keep count anymore

[@angelitabecerra]

16:19 OK, now I need giant space rhinoceroses to be a *thing*

[@pakde8002]

I think we need a naming convention to prevent astronomy geeks from giving newly discovered astronomical bodies names that don't reflect well on the scientific community.

[@mortified776]

With species being named after celebrities, Pokemon, and Marvel characters; and fundamental particle names threatening to get sillier, I think a general convention on respecting the dignity of science is urgently needed!

[@TheLithp]

I'd totally name it New Asshole.

[@jefferroo]

Lowell doesn't rhyme with vowel or howl, it is Lo-el like saying Joel in two syllables.

[@papajuuso9159]

17:37 Yes, I will not be sleeping tonight.

[@elvato_ns]

well… Twitter can’t cancel it…

[@warbrain1053]

I really want a blackhole in the solar system :')

[@nymphrodellsalavin]

Thanks for the link to the woodcut, I wasn't sure it was going to be there since it's not copyrighted to credit wasn't legally needed

[@JohnDrummondPhoto]

What a time it is for science geeks like me to be alive.

[@nosuchthing8]

It's amazing to be alive at all during the time of covid

[@sharpshooter33]

I wish I could have shown this to my grandfather before he passed. He used to listen to Cost to Cost AM and was convinced Planet X was going to strike Earth in 2016 and he said some pretty insensitive stuff expecting we may only be alive for a few years longer than he would

[@dougalexander7204]

How do you guys do it? The content of this channel is fascinating and Simons delivery is brilliant.

[@michaeltobias3110]

Simon is an excellent presenter of words

[@caesarshotdogchampion8738]

I randomly decided to search this just now and saw you uploaded 11 hours ago. Thank you my psychic intellectual teacher

[@jacob221100]

i truly wonder how is it possible someone may dislike such educational videos XD .

[@FallenRingbearer]

Probably a flat-earther lol

[@HS-cf8lz]

Planet 9 is the rogue planet that creates its own dark matter that also creates mini black holes

[@tj4234]

13:30 they can vote how they like, but Pluto is still a planet to me.

[@kingdart999]

Then does that mean other dwarf planets are also planets for you then?

[@tj4234]

@@kingdart999 yeah sure. The more the merrier.

[@jasonbourneistreadstone]

.. And that missing ninth planet is named Pluto. And it still remembers being Planet 9 and is bitter about being reclassified as a dwarf planet.

[@ravenlord4]

Fun fact: Ceres, Vesta, Pallas, and Hygiea were also once classified as planets.

[@ravenlord4]

@Gruggadubdub Good point. And in ancient times, the Sun and Moon were also considered planets but ironically NOT Earth. It is cool to see science in action, adding and subtracting when gains in information and knowledge are achieved.

[@ravenlord4]

@Gruggadubdub Well, I think the new term is "Little people planets" now, but yeah, I like where you are going with that ;)

[@thomasspengler9044]

@Gruggadubdub if you look at the definition laid out by the IAU, the same definition used to declassify Pluto, then you’ll realize how arbitrary it really is. What they used to declassify Pluto could also be used to declassify neptune and Jupiter as well. Neither of those gas giants completely cleared their orbit of other objects, so technically Jupiter and neptune should be considered dwarf planets too. The whole thing is pretty absurd

[@viperzang6923]

@Gruggadubdub because scientists enjoy ruining people childhoods. "my very educated mother just severed us nine ___" We have no more pies 😢

[@vonfaustien3957]

@Gruggadubdub simple they didnt want a 40 planet long list for the solar system which is where we'd be if all the keplar belt and asteroid belt dwarf planets were counted so they added a additional criteria to the definition so they could keep the list short. It was actually briefly debated when those Keplar belt objects started popping up that Ceres and the larger asteroids should be readded back into the planet list like they were orginally before they said nah and shot Pluto to keep the list short.

[@sonicguyver7445]

Back in my day we had 9 planets! We had *Pluto* and I never heard anyone complain! And from what I remember Planet X is nothing but trouble. The inhabitants want to borrow Godzilla (01) and Rodan (02) then they turn them around and use them against us.

[@briang7030]

Simon Whistler must be Square Space highest paid "employee"

[@LillibitOfHere]

I spent the whole video thinking about how instead of talking about Uranus we could have been talking about "Georgie inside us".

[@WilbertvandenBosch]

You can really tell Simon is very much interested in this subject. There is a slight "uppity" in the way he narrates this video. Very engaging indeed :-)

[@brandon2755]

16:58 “our sun stole it”. Rogue planets are super fun to think about. Planets formed around one star that for whatever reason were launched out of orbit, could be that Sedna was either taken by our sun or adopted by our sun. Path got close enough to be caught by our suns gravity that it’s basically in the middle of a slingshot and since that orbit is so far out that we have it’s estimate around 11,400 years. There are countless people out there much smarter than me that probably already thought about this but I’m not going to stop bringing this up, at the end of the day, we simply don’t know.

[@yusakwilliam1179]

Maybe the real Planet Nine are the friends we made along the way.

[@llydrsn]

I don't know if it has been featured in any of Simon's channels, but the controversy about who really discovered Neptune (mathematically and visually) is also a fascinating tale. It is between an unassuming and humble John Couch Adams (who is British) and the bombastic and prodigious LeVerrier.

[@HarryLewinASR]

The Brits calculated or mis-calculated something and failed to discover a planet. The French calculated and with some help from the Germans found a planet. I don't think anyone but a Brit thinks there's a controversy here.

[@TheRedMartian]

He believed in martians, and I’m here to prove he was right. All though we’re red not green/grey like you think.

[@fefelarue2948]

I told people that and nobody believed me

[@davenettlesmusic2954]

I saw the 1st Mariner 6 images.

[@stevewiles7132]

It does exist, when it comes anywhere near us our planet goes nuts.

[@kesslerrb]

Percival Lowell’s last name rhymes with the word “roll”

[@paulfeist]

Glad I'm not the only one that noticed that!

[@paulpeterson4216]

It also kinda rhymes with LOL

[@prime-rib]

You left out an important and pertinent fact about the wobble in Mercury's orbit: The original theory was that there was unseen, "dark matter," (ring a bell?) that was disrupting the orbit. Later, mathematics solved the problem. Perhaps modern astrologers aka cosmologist will get a clue, pull their collective heads out of their collective paradigm and figure that out that new mathematics can solve their problem, too, instead of creating an ever-increasing list of mythical dark particles.

[@YandereBambi]

There is no missing 9th planet cause Pluto never left! 😭 Viva la Pluto!

[@2bonk22]

Yo Simon, His name is Percival Low- ell, the O is long.

[@beckc101ify]

Of course there's a Planet Nine! Pluto!

[@LoboEye]

Then we have 17 planets by that logic.

[@nathanward1174]

Great video as always. Keep up the great work. Stay safe. Family first

[@MrTexasDan]

when he said Uranus, I had to turn on Closed Captioning, just to see.