This was high quality as it got for so long. Imagine waiting for, I think it was 9 years, for the New Horizon project to reach Pluto. It was worth it though, we all wanted to know what it looked like, and what a beautiful planet it was.
@@Snorlax-zw9gc We got images from NASA who states they are of Pluto. Considering the equipment available when devices needed to send such a photo didn't exist for another ten years after the launch. nor is it possible for the existing radio antenna array to receive a signal from a device designed so long ago even possible. NASA being the only available source of data can state anything they wish, no one can prove them incorrect, well except for actual comparison of data available during the era it was sent on its voyage and the era is was supposedly received.
@@maxliu7576 Good point, that would change it verbally (although you could argue that the first "h" in "haych" is semi-silent). But within text, it wouldn't change, it would still be "an".
@@PGraveDigger1 tbh when the H is pronounced i find that ppl use 'an' moreso, not less. I've seen "an history". so, this argument is basically barking up a nothing tree.
@@Haliya. Sounds like a reasonable speculation. I don't think they had to foresee much, because Eris caused enough chaos in their own view on Pluto and it's surroundings.
And now Uranus and Neptune aren't considered Gas Giants anymore but actually Ice Giants (as you probably know, this is a old video) but just interesting to see how our understanding is ever changing.
Indeed. Unlike Jupiter and Saturn, which-just like stars-are comprised almost entirely of hydrogen and helium (but are actually much too small to *become* stars), Uranus and Neptune have a very different constitution. Rather, they're both made up of ammonia, methane, and water. The last of which is kept under such high pressure by the other two that never evaporates despite reaching temperatures of more than 350°F. Only an astrophysicist could ever get away with calling *boiling water* "ice."
Also Neptune sometimes goes into the Kuiper belt so hasnt cleared its neighbourhood (one of the IAU's three criteria for a planet), this isnt even talking about any of the asteroids orbiting at Jupiter's L4 and L5 points (they are called Trojan asteroids). Also Uranus and Neptune are considered Jovian planets (same with Jupiter and Neptune) which then go to 2 sub categories as you said
Weird, in Spain it was taught that there was two groups, the terrestrial planets and gas planets, the gas planets can be divided by gas giants and ice planets
+Cameron Ballard: That won't help you -- since Eris scientists have found several 'dwarf planets' in the Kuiper Belt that are larger than Pluto and they'll keep finding more for quite some time
To this day, there is no Kuiper Belt Object bigger than Pluto. Eris is the only object to have a higher mass and comparable size. Based on outdated estimations, Eris was supposedly bigger than Pluto, but New Horizons discovered that Pluto actually had a bigger diameter, if only by 50 km. the other three dwarf planets, which are also the biggest non-planetary objects in the solar system, are 963 km (Ceres), 1502 km (Makemake) and 1920x1540x990 km (Haumea, ellipsoid shape); compared to 2326 km (Eris) and 2374 km (Pluto). The only object that could be bigger than Pluto would be a Planet Nine or a stray object that hasn't been found yet.
ok maybe they are bigger resolution, but just go to google maps (they have planet-viewing mode). you cant really even see the craters (only the biggest ones)
@Gwyneth Yeo Bing Wen Student yea ik but they are not really high def tbh (unless you can find the GOOD ones cuz google only shows me the blobs or artwork [check if the picture is artist impression or sth cuz its very common])
It reminds me of that one Rick and Morty episode where Jerry refuses to accept that Pluto isn’t a plannet cause "you can’t just change science" when change is the whole point of science
To a point, the word “planet” is a human invention and open to interpretation, so this is literally astronomers changing science. A planet isn’t like a hydrogen atom: there is no disagreement as to what an atom is or its structure. The word “planet” suffers from the same issue as “continent”: no real formal definition. Astronomers decided that a planet has to be round (its characteristics allow it to be as such), under the influence of a star, and “cleared the neighborhood” around its orbit. But this last condition was conveniently added to justify the recategorization and it’s not something that the cosmos has. Jupiter, for example, has trojan asteroids in its orbit (in front and back). Is that “cleared the neighborhood”? What about the near-Earth objects (like asteroids) that come close to Earth or even orbit Earth? What other Pluto-sized objects orbit close to Pluto that its orbit is not cleared? So, yes...science changes when discoveries are made. For this, however, it was just astronomers making a list even more exclusive but nothing else has changed (Pluto still orbits the Sun, still preserves its characteristics, still has a circular orbit (compared to other KB objects), and is among the bigger objects beyond Neptune).
@@einsteinboricua *>"Jupiter, for example, has trojan asteroids in its orbit (in front and back). Is that “cleared the neighborhood”? What about the near-Earth objects (like asteroids) that come close to Earth or even orbit Earth? What other Pluto-sized objects orbit close to Pluto that its orbit is not cleared?"
And it’s much larger than everything immediately around it. I find it entertaining in astronomy books that have Ceres on one side, and the asteroids on the other. But Ceres is special to me for being the only dwarf planet on this side of the Kepler belt :)
+Dhruv Verma i doubt it highly cause i constantly get non skippable amazon ads like 60% of the time no matter what the content also i have used amazon maybe twice in my entire life and bought sonething off it just once so i don't think i should get allthose amazon ads.
Well, There can be a 9 planet, actually, the guy who discovered Ceres is actually the guy who discovered that can be a nine planet by the end of the Kuiper Belt, so, the 9 planet, with the size of Neptune should be the king or queen of the Kuiper Belt.
Fun fact about Pluto: U could wrap Russia around Pluto and have leftover parts of Russia! Surface area of Pluto ♇: 16647940km^2 Surface area of 🇷🇺: 17098322km^2
@@Onixstar They'll likely never collide because Neptune and Pluto are in 2:3 resonant orbits, every 2 orbits of Pluto, Neptune does 3. Because of this, the two will never get close to each other.
@@Minny_curryEDITS The Belters, a faction of space-based asteroid dwellers from the sci-fi TV and book series The Expanse, have a large presence on Ceres. In their language (lang Belta) "Belter" is "Belta", and "people" is "lowda", so "people of the Belt" is Beltalowda. They have entered the chat because they are frustrated that one of their most significant bases is being cited as a place no one has heard of.
good lesson in both history and science! Basically, nationalistic Americans (including some astronomers) pushed Pluto as a major planet in the public news media, and those many who questioned Pluto as a major planet in the decades following its discovery in 1930 didn't care enough to make a big deal of challenging it; there were other "more important" things to tackle, and besides, actual physical information on Pluto was simply lacking until its first satellite Charon was discovered in the late 1970s.... Some of the most-used university astronomy textbooks in the 1930s and 1940s actually posited Pluto more as a minor planet. Disney apparently had a lot to do with entrenching Pluto in the American consciousness. But it always was a silly school exercise to memorize "nine major planets" (or even eight!) ...
Well done. I can understand Pluto defenders 'hearkening back to their youth' but the position of 9 planets seems untenable. We either have 8 or we have 15 or 20 (with more added every year).
Would it had been creepy if the New Horizons probe took a closeup picture of Pluto and it looked exactly like the pixelated low-resolution mush that the Hubble Telescope took?
knight wing I was imagining a Truman Show like scenario though, if all the distant objects in the sky are just low-resolution printouts fabricated by an observing alien race.
3:25 "This problem could be ignored as long as no one found an ice ball bigger than Pluto. Which is exactly what happened in 2006 with the Discovery of Eris." Eris is larger by mass, but the New Horizons mission showed us that Pluto is in-fact bigger by volume. If sheer size was the predominant factor for demoting Pluto, that reason might not be enough anymore... because as of now Pluto is the largest object (at least by volume) beyond Neptune.
At the time Pluto was demoted, NH had just been launched so there was no way to prove this until the spacecraft reached the destination. At this point, it’s not mass, volume, or size what matters but rather whether Pluto “has cleared the neighborhood of its orbit”. The answer is no, which is why Pluto is a dwarf planet.
As of now, the definition of a planet is as follows: 1. It must be large enough to collapse into a sphere under its own gravity 2. It must orbit a star (this mainly separates moons from planets though it also means rouge planets don’t count) 3. It must be gravitationally significant enough to clear its orbit from other objects (save those orbiting itself) (I’m guessing there’s an implied fourth point that it can’t be a star itself) Pluto mainly falls in point 3, as its orbit does take it far into the Kuiper belt. Pluto does not however only orbit in the Kuiper belt. It’s orbit is highly elliptic and actually crosses inside Neptune’s orbit.
I had a science test right as the debate over the upcoming switch came up. "How many planets orbit the sun?" I wanted to strangle the test proctor. How am I supposed to know if its a planet when *scientists* are still discussing if it's a planet?!
Barley Sixseventwo What's worse is if you're gonna answer the correct answer that you know, or the follow the outdated curriculum which many (lazy) teachers just follow without research.
There isn't any debate any more. Pluto isn't a planet. We found things like pluto but bigger so include those or just accept that pluto isn't a planet.
@@harrystone3527 No, because europa has underwater oceans, there's a chance that in the water there is life, so the joke is that aliens are saying "attempt no landings here"
I’ve never noticed this until now but I think it’s important to point out that you spelled “Kuiper” wrong at 3:38. Although I would love to see a Kupier belt as well :)
SSSSSHHHHT! If the international astronomical union gets wind of this they may decide they will rename the Kuiper belt as well. Do you think their havoc, madness, and pandemonium will stop at Pluto? Do not give them any ideas! They will not rest until all is chaos, confusion, and commotion.
Eileen Liew TRUE i think this is the perfect way to go , there are few entertaining teachers that become successful as famous good teachers in schools.
just give Pluto an additional honor-title, "honor-planet", just for being part of the planet-club so long. A special title just for pluto alone, like the special place he got in our hearts.
MayuriKurotsuchi Even when I was a theist, I knew how tiny the Earth was in the Solar System. It was presented to me in an "if the Earth were a tennis ball, then Jupiter would be a beach ball X number of miles away, and the Sun would be something much larger else N number of miles away. It's when you realize that the Sun is one of *ten thousand million trillion stars*, and that the distance to the *nearest* of those stars is *25 trillion trillion miles* (41 trillion trillion km) -- much less the distance to the other end of the Milky Way, or even Andromeda our nearest neighbor Galaxy, which is *12 thousand trillion trillion miles away*) on top of how minuscule the Earth is in the Solar System that you realize how -- in the grand scheme of things -- utterly insignificant we are.
I haven't done the math, but you might be right. I know that our moon has roughly the same surface area as Australia, and Pluto is smaller than our moon, so it's definitely possible that a country on Earth might have a larger surface area than Pluto.
I don't understand why people consider the label 'planet' as some sort of status symbol. The point of these labels is to classify groups of objects with similar characteristics together and allow for differentiation between other classifications. People act as if some insult was dealt to Pluto by its current classification.
+Francesco Magnoni The case may be that some people care more for a lifeless ball of ice 7.5 billion kilometres away than they do for many of the issues on our own planet with real people who feel and experience them...
Toby Martin it's easier to talk about insignificant and far away things rather than issues abuot which everybody has conflicting opinions and hard feelings. if i just meet someone, i'd rather talk about weather than about cancer.
Francesco Magnoni That much is true. Obviously I have no qualm about people discussing planets! But when people get riled over the status of Pluto as if it's been personally offended...
+violacrb You are not one of us. This is not directly an insult but that doesn't mean it can't make you feel sad or excluded. And for those of us that grew up with Pluto being one of planet buddies that is basicly what those mean scientist guys have been telling us about Pluto. Not one of us not a planet.
Pallas, Ceres, Pluto, Eris, the other names he mentioned, and several more, aren't asteroids or anything like that. They've been re-named dwarf-planets, which in my opinion is still a planet I will continue to acknowledge them as such.
The three criteria for planetdom, are 1, it must be spherical, 2, it must have a regular orbit around the sun, and 3, it must have cleared its path of orbit. so because pluto is in the Kuiper belt, it has not cleared its orbit, and is therefore not a planet, and is instead a dwarf planet
I think that he meant to say that the object must have a greater mass than all the other objects within its orbital path. Since Pluto is small and within the Kuiper belt this isn't the case.
the problem with that rule is since pluto is located in the kuiper belt, it would need a giant ass gravity to clear it's neighborhood, so high, even Earth wouldn't be able to do it, so how is thay fair? On top of that Neptune also has multiple aestroids in its orbit so it should be considered a dwarf planet? This is when the rule is slightly messed up
Earth isn't located in the Kuiper belt though, it's in the "Earth belt". Earth shares this area of the solar system with a handful of asteroids and the Moon. The difference between Earth & Neptune and bodies in the kuiper belt like Pluto is that both of those planets dominate their "belts". Pluto comes nowhere close to being the dominant force in the Kuiper belt. So "Clearing its orbit" really means "Clearing its orbit of competing bodies". Hope that helps.
Damn. Today I'm watching videos of this channel every now and then just to find this 8 year old piece, which was created and uploaded when I was only 15. There was an internet before I found it and it gets more and more clear the deeper I go xD
I think it's cool that in Sailor Moon, they have Sailor Soldiers for all the planets, and the moon, Pluto, Ceres, Vesta, Pallas and Juno. It's a big party.
And the only way to save the planet is by making high school girls Superheroes. The reason they give is just made up a little bit into the series. And it's just an excuse to let the animators draw naked high school girls.
There should be no debate, there are certain requirements needed to be classified as a planet. 1. Must orbit the sun, Pluto does this 2. Must be formed into a sphere under it's own gravity, Pluto has done this 3. Must clear it's orbit of other bodies, this is where Pluto fails to meet the classification, there are thousands of other bodies nearly the size of Pluto or larger in it's orbit.
But seeing as those "classifications" were made up after it was called a planet. It's like telling a midget they are a person and then saying later they aren't.
bromixsr But our definition was flawed from the beginning. Planet is far to broad a term to classify the objects in our solar system, if we did not change the definition there would be hundreds of thousands of planets in our solar system, a separate classification for dwarf planets is a good idea.
bromixsr The more we discover, the more differences we find. The more differences we find, the more we need to categorize. Your logic suggests that we should still call the world "flat".
GuiltyMiner0343 I can agree with acceptation to 3- I would add an and/or "Is absorbing nearby masses into itself (smaller bodies)." Pluto still would not meet the requirement, but planets in the final stages of forming or with rings would pass.
That was incredibly helpful! Gosh why didn’t they just start with The Kuiper belt in school and use that as a starting point to then break the news that we were wrong about Pluto.
My school did in the mid 90's. We learned about the keiper belt (also pluto as a planet). But my teacher would refer to pluto as a "Neptunian Object" much more than a planet. And explained "there were many neptunian objects beyond neptune". He was a head of his time as a teacher.
@@CaptainX2012 is CZcams even existed 2012? Well i learn new things every day (also i could do basic math by looking up how old was this video but meh, i am lazy)
it's not arbitrary tho? it's a way for humans to categorize things to make them more manageable and relevant to study, all of the things labeled in this video are solar bodies in our solar system, and we keep breaking them down to more and more specific taxonomies, solar bodies to plants or dwarf plants or moons etc, then they're described more specifically as terrestrial planets or gas giants or what have you, and then you describe them as their name, these definitions are useful for studying properties and determining properties of like objects we can't study as directly
We discovered new information and were faced with three choices. A) Introduce dozens of new planets. B) Leave it at 9 planets, but give up any meaning the word planet has. C) Demote Pluto. We picked C.
No Science has never said anything that's been proven false. Babies DON'T feel pain. The Earth IS flat. It's obvious that the first thing Science says is always right
In your HEART? OMG the stupidity.......Will you please explain to me why being called a "planet" one day and then a "dwarf planet" the next is perceived by so many of you to be a "demotion" at all? Why is simply being called a planet "better" than being called a dwarf planet? A giant ball of rock and ice that's 8 LIGHT HOURS from the Sun DOES NOT give two shits what human beings call it.
This was incredibly well done, I am surprised I haven't seen this presented this way before. It certainly makes the asteroid belt more interesting knowing it previously had planets within it.
Watching this in the year 2018, after the New Horizons flyby of Pluto, it's insane how much better pictures we have of Pluto now. My mind is just completely blown by this.
+Xianaic it was just the Greeks seeing "wish those dots wander", referring to the fact that the stars move together but the planets move completely differently from our sights, wander becomes plane and wanderer becomes planet. It's really our fault for never translating the names to keep them ambiguous. Respect Pluto's dwarf pronouns, capitalist pigs.
Look, I don't care what they are. Haumea is my favourite dragon egg in our solar system. It's sorta reptile egg shaped, has a big red patch, 2 moons and a ring system.
This video, though informative, leaves out a crazy important detail : The International Astronomical Union in 2006 defined a planet as a celestial body that : a) Is in orbit around the Sun. b) Has sufficient body mass for its self gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium shape, i.e. nearly round in shape. c) Has cleared the neighborhood around its orbit. Now, Pluto can't clear objects out of its path. Hence its called a dwarf planet.
+chorosso They are the ones which either do not have gravitational boundation with a star or have been thrown off from their orbit. I don't know the definition though.
Even though the video makes complete sense and I completely agree with the grouping and clarification, its still hard for me to think of Pluto as not a planet. Because I grew up being taught Pluto is a planet and I still think of Pluto when I think of "the things in the sky that we have named"
That, and the small bit with Galileo was inaccurate, but the video's not really about history. Some things we have to let slide sometimes, though you're not wrong for pointing them out.
The three criteria that defines a planet: 1. Spherical under own gravity - Check 2. Main body of orbit around star (excludes moons) - Check 3. Object dominates its orbit - Pluto fails
Actually, it doesn't. It's only a few percent bigger than pluto, and neither of them are massive enough to "clear" their neighbourhood from other smaller objects (unlike Earth which contains over 99.99% of the mass of where it orbits). You misunderstood the second criteria (maybe cus I phrased it poorly). It is an official definition by IAU
Christopher Bradley Eris is a planet. Why is that a problem? It is now believed to be marginally smaller than Pluto though 27 percent more massive, which means more rocky and therefore more planet-like.
every couple of months i find myself watching videos about the solar system, only to be in awe at the scale of it all and at all the things left unexplored, until I eventually sink into nihilism about the fact that I will never be able to visit any of them.
@@mikeyreza I think youtube has changed how it compresses videos... So it makes a small item sorrounded by a plain colour bigger than it actually is.. Probably for reading text in lower resolution
Though I'm the kind of person who subscribes to the notion of 'if it ain't broke, don't fix it', I agree with the reclassification of Pluto. With the discovery of Eris, Sedna and others, the list of planets would have ballooned out of control. Before 2006, no one had seriously considered what truly distinguishes a planet from other large-ish celestial bodies like Ceres in the asteroid belt. A line had to be drawn, and the International Astronomical Union did just that. We now have a stable list of bodies that covers all the 'main' ones in our solar system and excludes objects which are not large or 'special' enough.
A line did not have to be drawn. There is absolutely no scientific basis to artificially limiting the number of solar system planets to a low number. We already know the universe has billions of galaxies, many of which have billions of stars. Would we say Jupiter can't have 67 moons because kids can memorize only four? Memorization is not important to learning; what is important is understanding the different types of planets and their characteristics. If our solar system has 50-100 planets, then that is what it has. Why distinguish bodies like Ceres or Pluto from the larger planets when they share the same characteristics as those planets with the only difference being they are smaller versions of them? Also, we do not have a stable list of main planets because the IAU decision is contested by many astronomers, and there is no consensus in the field one way or the other.
It was politically convenient to preserve the memoriseable, small 'club' of planets. Personally, my concept -- and daresay many peoples' concept -- of the word 'planet' is a large body, one of a few rather than one of millions. You do, however, make some good points: convenience of memorising is not, in the grand scheme of things, important
plusplusplusplusp Thank you! I think we are going through a paradigm shift. The rapid discovery of exoplanets means it's only a matter of time before planets, like stars, number in the billions when we consider just our galaxy alone, never mind other galaxies! The reaction of the public and of many astronomers to what might have been a politically convenient position has not generally been positive. People like the idea of adding new planets and dislike taking planets away. As I'm sure you know, the term "large body" is very relative. Earth is hardly "large" compared to Jupiter, and the Sun is hardly large compared to some of the giant stars. Eventually, we will have to view the concept of planet based on subcategories such as terrestrial, jovian, dwarf, etc., with "large enough" meaning the object is large enough to be rounded by its own gravity.
***** i can type perfectly fine, but i honestly can't be bothered. triple-checking my comments just so some guy won't be able to reply with a snarky correction of my comment is not something i want to do
realizing this photo of Pluto was the most high quality in 2012
This was high quality as it got for so long. Imagine waiting for, I think it was 9 years, for the New Horizon project to reach Pluto. It was worth it though, we all wanted to know what it looked like, and what a beautiful planet it was.
@@Snorlax-zw9gc We got images from NASA who states they are of Pluto. Considering the equipment available when devices needed to send such a photo didn't exist for another ten years after the launch. nor is it possible for the existing radio antenna array to receive a signal from a device designed so long ago even possible. NASA being the only available source of data can state anything they wish, no one can prove them incorrect, well except for actual comparison of data available during the era it was sent on its voyage and the era is was supposedly received.
@@wmgthilgen :/
@@wmgthilgen here.. you dropped your tin hat.. you're welcome.
@@wmgthilgen 😐 i smell aluminum
What's crazy is when this video was made, an HD photo of Pluto didn't exist yet
A*
@@obi-wankenobi5926 An*. The abbreviation HD when spoken starts with a vowel, so it should be "an HD photo" just like you'd say "an hour".
PGraveDigger1 What if he pronounced “H” not like “aych,” but “haych?”
@@maxliu7576 Good point, that would change it verbally (although you could argue that the first "h" in "haych" is semi-silent). But within text, it wouldn't change, it would still be "an".
@@PGraveDigger1 tbh when the H is pronounced i find that ppl use 'an' moreso, not less. I've seen "an history". so, this argument is basically barking up a nothing tree.
I find it hilarious that Eris, named for the greek goddess of discord and chaos, was the one to upset Pluto’s status
Though old but "discord" the app?
@@samanthabishop6251 it was a joke since the other word also explains the meaning
This is just speculation, but maybe the people who discovered/named it foresaw pluto being demoted because of it, and thus named it as such.
@@Haliya. Sounds like a reasonable speculation. I don't think they had to foresee much, because Eris caused enough chaos in their own view on Pluto and it's surroundings.
Having read Heroes of Olympus and knowing quite a bit of Greek mythology now, I understood that XD
That shot of Jupiter taking up the entire sky triggered my flight or fight response.
For some reason I got like seriously scared
Its unnerving to me.
There is no escape.
"A Malfunctioning Destroyer"
@@amoralmarker6503 Bright, what did we tell you about posting classified information on the internet?
Its ok Pluto, Im not a planet either
The Ice Viper Im a planet
Saturn:WTF WE KNOW
The Ice Viper Your a hamplanet.
Dont worry Pluto. I have a dog named after me too
Did u just assume Pluto’s gender?
And now Uranus and Neptune aren't considered Gas Giants anymore but actually Ice Giants (as you probably know, this is a old video) but just interesting to see how our understanding is ever changing.
Indeed.
Unlike Jupiter and Saturn, which-just like stars-are comprised almost entirely of hydrogen and helium (but are actually much too small to *become* stars), Uranus and Neptune have a very different constitution.
Rather, they're both made up of ammonia, methane, and water. The last of which is kept under such high pressure by the other two that never evaporates despite reaching temperatures of more than 350°F.
Only an astrophysicist could ever get away with calling *boiling water* "ice."
Really!? Wow
Also Neptune sometimes goes into the Kuiper belt so hasnt cleared its neighbourhood (one of the IAU's three criteria for a planet), this isnt even talking about any of the asteroids orbiting at Jupiter's L4 and L5 points (they are called Trojan asteroids). Also Uranus and Neptune are considered Jovian planets (same with Jupiter and Neptune) which then go to 2 sub categories as you said
Weird, in Spain it was taught that there was two groups, the terrestrial planets and gas planets, the gas planets can be divided by gas giants and ice planets
@@melody._.3251 ....when and at what level?
"We need to first discuss a planet you've never heard of, Ceres" *laughs in outdated 3rd grade school supplies*
You learnd about Ceres in school? 😂
@@Vanuma25 I learned about Ceres by reading books
@@luggifer4360 Same
I remember drinking a brand of juice called Ceres. So that’s where it comes from.
I know Ceres
“We need to first discuss a planet you’ve never heard of before”
Me who’s watching the video a second time: “I am 4 parallel universes ahead of you”
Hehe
Hehe
i am 4 perpendicular universes ahead of you
Me who's played Universe Sandbox 2 and sees Ceres all the time: "I am 4 parallel universes ahead of you"
And he is 9 years ahead of you.
Basically what I'm hearing is we have to destroy Eris.
Pretty sure the Discordians wouldn't be OK with that. AT ALL.
But they would be willing to help with destroying Eris.
Because, y'know. Discordians.
+Cameron Ballard: That won't help you -- since Eris scientists have found several 'dwarf planets' in the Kuiper Belt that are larger than Pluto and they'll keep finding more for quite some time
To this day, there is no Kuiper Belt Object bigger than Pluto. Eris is the only object to have a higher mass and comparable size. Based on outdated estimations, Eris was supposedly bigger than Pluto, but New Horizons discovered that Pluto actually had a bigger diameter, if only by 50 km. the other three dwarf planets, which are also the biggest non-planetary objects in the solar system, are 963 km (Ceres), 1502 km (Makemake) and 1920x1540x990 km (Haumea, ellipsoid shape); compared to 2326 km (Eris) and 2374 km (Pluto).
The only object that could be bigger than Pluto would be a Planet Nine or a stray object that hasn't been found yet.
Cameron Ballard eris is actually smaller than pluto it was due to technological errors that it seemed that it was larger
Cameron Ballard NUU
This video is so old that we didn’t have high def images of Pluto yet.
Nor Ceres
2020 we still dont have high def images of Pluto
ok maybe they are bigger resolution, but just go to google maps (they have planet-viewing mode). you cant really even see the craters (only the biggest ones)
@Gwyneth Yeo Bing Wen Student yea ik but they are not really high def tbh (unless you can find the GOOD ones cuz google only shows me the blobs or artwork [check if the picture is artist impression or sth cuz its very common])
wojtekpolska we do.
Pluto: *cries*
New horizons: _pluto is 4km larger than eris_
Pluto: YAY!
Eris is more massive than Pluto, but appears to be slightly smaller by volume. It's likely more rock and less ice than Pluto.
Yy we have same pfp
Nick World Mars rules Pluto drools
@@Human-gu2cx Earth rules Mars drools
I'm a pluton
1:13 calling earth our home planet is one of the coolest things ever, even though it’s completely normal
Yeah
1:34
Grey: It’s smaller than nine moons!
Subtitle: It’s smaller than seven moons!
*nOIcE*
Ryujinzzz Yep and that’s just the person who made the subtitles fixing Grey’s mistake
thebigdog360 Which they shouldn't be doing. Subtitles should always capture what a person actually says, not what they should have said.
@@NoriMori1992 subtitle nazi
and the video showed 8.
@@NoriMori1992 It captures what he meant.
> Planet you've never heard of: Ceres
Meanwhile in my head: "CERES BELONGS TO THE BELTERS!"
BELTALOWDA
LONG LIVE THE OPA
Is that an Expanse reference?
@@captainskeleton3994 'tis indeed.
Ceres is the goddess of grain and Agriculture the equivalent of the Greek Goddess Demeter.
It reminds me of that one Rick and Morty episode where Jerry refuses to accept that Pluto isn’t a plannet cause "you can’t just change science" when change is the whole point of science
To a point, the word “planet” is a human invention and open to interpretation, so this is literally astronomers changing science. A planet isn’t like a hydrogen atom: there is no disagreement as to what an atom is or its structure. The word “planet” suffers from the same issue as “continent”: no real formal definition.
Astronomers decided that a planet has to be round (its characteristics allow it to be as such), under the influence of a star, and “cleared the neighborhood” around its orbit. But this last condition was conveniently added to justify the recategorization and it’s not something that the cosmos has. Jupiter, for example, has trojan asteroids in its orbit (in front and back). Is that “cleared the neighborhood”? What about the near-Earth objects (like asteroids) that come close to Earth or even orbit Earth? What other Pluto-sized objects orbit close to Pluto that its orbit is not cleared?
So, yes...science changes when discoveries are made. For this, however, it was just astronomers making a list even more exclusive but nothing else has changed (Pluto still orbits the Sun, still preserves its characteristics, still has a circular orbit (compared to other KB objects), and is among the bigger objects beyond Neptune).
Wow that was a long explanation but yeah ☝️ agree
@@einsteinboricua
*>"Jupiter, for example, has trojan asteroids in its orbit (in front and back). Is that “cleared the neighborhood”? What about the near-Earth objects (like asteroids) that come close to Earth or even orbit Earth? What other Pluto-sized objects orbit close to Pluto that its orbit is not cleared?"
"A planet you've never heard of..."
Me oh lmao he's gunna say ceres...
*"Ceres"*
Although Ceres got an upgrade and became a dwarf planet as its the only big and spherical object in the asteroid belt.
@John Boudreaux vesta is more potato shaped
And it’s much larger than everything immediately around it. I find it entertaining in astronomy books that have Ceres on one side, and the asteroids on the other.
But Ceres is special to me for being the only dwarf planet on this side of the Kepler belt :)
Ceres is under 1ooo km wide, not a planet, Pluto on the other hand, fits all the definition (criteria) of a planet.
@@rogerdiogo6893 no it doesn't
@@OrchidAlloy neither does planet earth, is shaped like a pear...
Before the
video played, I got a "hey Google" ad, in which a person asked Google if Pluto was a planet.
google ads are based on your search/watch history
CZcams ads are based on tags on CZcams videos put in by the uploader.
+Dhruv Verma i doubt it highly cause i constantly get non skippable amazon ads like 60% of the time no matter what the content also i have used amazon maybe twice in my entire life and bought sonething off it just once so i don't think i should get allthose amazon ads.
+360flyby something
Sensei Snowcones its because your intetest is probably pluto so google will show you that ad so cgp gets money 💵
1:41 for some reason this made me laugh really hard when i saw jupiter overwhelming the screen
Uhhh ok?
8 years later I'm still bummed that we don't call Eris the Queen of the Kuiper Belt and Ceres the Queen of the Asteroid Belt
Well, There can be a 9 planet, actually, the guy who discovered Ceres is actually the guy who discovered that can be a nine planet by the end of the Kuiper Belt, so, the 9 planet, with the size of Neptune should be the king or queen of the Kuiper Belt.
You could make a sci-fi setting with exactly these naming conventions.
Eris is smaller
@@AndyHappyGuy But classier
objec como: am i a joke to you
Fun fact about Pluto:
U could wrap Russia around Pluto and have leftover parts of Russia!
Surface area of Pluto ♇: 16647940km^2
Surface area of 🇷🇺: 17098322km^2
Eric scalies ._. no it’s not a planet it litteraly is in the way of Neptunes trajectory so its litteraly more of a moon than a planet.
And this is why we should all be scared of Russia
@@nikolazivkovic4880 I wanna see a collision! That'd be epic.
No the soviet union is bigger
@@Onixstar They'll likely never collide because Neptune and Pluto are in 2:3 resonant orbits, every 2 orbits of Pluto, Neptune does 3. Because of this, the two will never get close to each other.
If Grey made this video today, there would be an HD version of the Pluto picture he posted in this video.
Before the arrival of the deep webb space probe, this blurry ball was actually the best image there was, a cgi render created with data from Hubble.
That probe was called New Horizons, not deep webb, don't know where you got that info.
@@toppatblue Probably the James Webb Deep Space Telescope which is being built.
A E S T H E T I C yeah, I guess. My point is still valid tho.
And of Ceres and Vesta
2:10 "... a planet you've never heard of; Ceres."
*Beltalowda have entered the chat*
?
@@Minny_curryEDITS The Belters, a faction of space-based asteroid dwellers from the sci-fi TV and book series The Expanse, have a large presence on Ceres. In their language (lang Belta) "Belter" is "Belta", and "people" is "lowda", so "people of the Belt" is Beltalowda. They have entered the chat because they are frustrated that one of their most significant bases is being cited as a place no one has heard of.
I read it as “is pluto a ufo?” and that pretty much explains how late it is rn.
It's so refreshing to be able to watch an informative video without someone talking about skillshare or world of warships
Welcome to 2012
insert brilliant refrence here
or christians in the comments on a space video
@@1un4cy As a christian i must say...
Youre right, why cant christians accept that some people think differently
AlphaAmoeba It’s not “think”different, it’s science.
Aren't Pluto, Ceres and Eris considered dwarf planets, which was a category created for them?
right!!!
Sort of. The category of dwarf planet is becoming more common, but it's still not universally accepted by astronomers.
Wolfeson28 Then why would they teach it to me at school if it's not accepted by astronomers?
Wolfeson28 Oh yeah, school system that's why.
good lesson in both history and science! Basically, nationalistic Americans (including some astronomers) pushed Pluto as a major planet in the public news media, and those many who questioned Pluto as a major planet in the decades following its discovery in 1930 didn't care enough to make a big deal of challenging it; there were other "more important" things to tackle, and besides, actual physical information on Pluto was simply lacking until its first satellite Charon was discovered in the late 1970s.... Some of the most-used university astronomy textbooks in the 1930s and 1940s actually posited Pluto more as a minor planet. Disney apparently had a lot to do with entrenching Pluto in the American consciousness. But it always was a silly school exercise to memorize "nine major planets" (or even eight!) ...
Well done. I can understand Pluto defenders 'hearkening back to their youth' but the position of 9 planets seems untenable. We either have 8 or we have 15 or 20 (with more added every year).
"Have you heard about Pluto? That's messed up, right?"
--Burton Guster
Bruton Gaster*
Would it had been creepy if the New Horizons probe took a closeup picture of Pluto and it looked exactly like the pixelated low-resolution mush that the Hubble Telescope took?
It would be more aggravating than creepy.
knight wing I was imagining a Truman Show like scenario though, if all the distant objects in the sky are just low-resolution printouts fabricated by an observing alien race.
Vinesauce Obscurities Oh. I had no idea that that was what you meant.
knight wing It's all good.
Vinesauce Obscurities Ok.
"We spent all of this taxpayer money and scientific research on this, and all we got out of it was a blurry photo!"
3:25
"This problem could be ignored as long as no one found an ice ball bigger than Pluto. Which is exactly what happened in 2006 with the Discovery of Eris."
Eris is larger by mass, but the New Horizons mission showed us that Pluto is in-fact bigger by volume. If sheer size was the predominant factor for demoting Pluto, that reason might not be enough anymore... because as of now Pluto is the largest object (at least by volume) beyond Neptune.
At the time Pluto was demoted, NH had just been launched so there was no way to prove this until the spacecraft reached the destination. At this point, it’s not mass, volume, or size what matters but rather whether Pluto “has cleared the neighborhood of its orbit”. The answer is no, which is why Pluto is a dwarf planet.
I just 'discovered' this channel 5 days ago, and it is now my absolute favourite.
As of now, the definition of a planet is as follows:
1. It must be large enough to collapse into a sphere under its own gravity
2. It must orbit a star (this mainly separates moons from planets though it also means rouge planets don’t count)
3. It must be gravitationally significant enough to clear its orbit from other objects (save those orbiting itself)
(I’m guessing there’s an implied fourth point that it can’t be a star itself)
Pluto mainly falls in point 3, as its orbit does take it far into the Kuiper belt. Pluto does not however only orbit in the Kuiper belt. It’s orbit is highly elliptic and actually crosses inside Neptune’s orbit.
The total mass in Pluto's orbit makes Pluto a fraction
@@Noorthia Yes. And?
Uh no Pluto is a dog
No no
@@MounibAjdk r/woooosh
What?
@@MounibAjdk czcams.com/video/r5eWCP29cDU/video.html
The Disney dog named Pluto.
I had a science test right as the debate over the upcoming switch came up. "How many planets orbit the sun?"
I wanted to strangle the test proctor. How am I supposed to know if its a planet when *scientists* are still discussing if it's a planet?!
Barley Sixseventwo What's worse is if you're gonna answer the correct answer that you know, or the follow the outdated curriculum which many (lazy) teachers just follow without research.
There isn't any debate any more. Pluto isn't a planet. We found things like pluto but bigger so include those or just accept that pluto isn't a planet.
They're not still discussing it though. It's a done and dusted subject. Pluto isn't a planet.
Samuel Kwok He meant when it was still being discussed
i have heard of ceres as well as eris
1:45 Imagine that great red spot as an eye looking at you.
Interestingly, Eris was latter in 2010 calculated to be slightly smaller than Pluto by volume.
"A planet you've never heard of: Ceres"
Grey, I play Warframe, I know all about Ceres. That's where the Grineer make a lot of their ships.
And eris is where the infested live
Exactly.
@@edwardnygma8533 And where I farm everything because my weapons are seriously underleveled even tho I played normally and rushed nothing.
Eris is the infested homebase
oh so this is where i knew ceres from
1:36 'Attempt no landings here' . . . Classic
i dotn get it can someone explain?
@@marluk8628 yeah so basically it means that you never want to like land on it with a vehicle
@@harrystone3527 No, because europa has underwater oceans, there's a chance that in the water there is life, so the joke is that aliens are saying "attempt no landings here"
@Carl Kirchhoff had just failed at my (quick) attempt to clarify this through google so thanks for explaining guys!
Grey seems to like 2010 with him referencing it in other videos
Crazy how a 9 year old CGP grey video still looks and sounds better than most videos people make today.
I’ve never noticed this until now but I think it’s important to point out that you spelled “Kuiper” wrong at 3:38. Although I would love to see a Kupier belt as well :)
Focus our telescopes into interstellar space maybe there’s more
SSSSSHHHHT! If the international astronomical union gets wind of this they may decide they will rename the Kuiper belt as well. Do you think their havoc, madness, and pandemonium will stop at Pluto? Do not give them any ideas!
They will not rest until all is chaos, confusion, and commotion.
Oh let him go back in time and change the spelling for a random dude on the internet
@@gamerwpic9612 WHOOOSH
-🤓
If I were Pluto, I would rather want to be a large asteroid, than a tiny planet.
Yep. Better to be a one eyed King in the land of blind than a cyclops in a land of two eyed, right?
Daniel Westerfield Plutoid*
I keep saying that Pluto went from the most pathetic of planets to the king of the Kuiper belt.
*Queen. Eris is King.
Pluto (god of the underworld) was male, hence King. Eris (goddess of strife) was female, hence Queen.
i learned more about the solar system in these 4 and a half minutes then i did in one entire science class (45 minutes) .-.
Eileen Liew That's the difference between the curiosity to learn and the education system.
Forrest Gump It's also the difference between rigorous education and entertainment education
Eileen Liew TRUE i think this is the perfect way to go , there are few entertaining teachers that become successful as famous good teachers in schools.
Why di mickey mouse go to space
Anwser He went to find Pluto!
Rubyclark08 Clark wow
I'm so glad that we have way better pictures of Pluto now than when CGP Grey made this video. Yay New Horizons!
just give Pluto an additional honor-title, "honor-planet", just for being part of the planet-club so long. A special title just for pluto alone, like the special place he got in our hearts.
Does anyone else get uncomfortable when they see Jupiter to scale?
It's terrifying
Luck at the sun to scale, hahaha
+MayuriKurotsuchi No. Why should we?
RonJohn63 I don't know. Maybe because it's just one of many visualizations of how small we are.
MayuriKurotsuchi Even when I was a theist, I knew how tiny the Earth was in the Solar System. It was presented to me in an "if the Earth were a tennis ball, then Jupiter would be a beach ball X number of miles away, and the Sun would be something much larger else N number of miles away.
It's when you realize that the Sun is one of *ten thousand million trillion stars*, and that the distance to the *nearest* of those stars is *25 trillion trillion miles* (41 trillion trillion km) -- much less the distance to the other end of the Milky Way, or even Andromeda our nearest neighbor Galaxy, which is *12 thousand trillion trillion miles away*) on top of how minuscule the Earth is in the Solar System that you realize how -- in the grand scheme of things -- utterly insignificant we are.
2:52 imagine if you have to take that test
Eris: if you pronounce in British it’s a swearword arse
I’m just glad more and more objects are being discovered and explored.
Ice ball bigger than Pluto... Russia xD
+Jacob Barron By surface area, that's actually true.
+Jacob Barron Russia isn't a ball though, it's more like a semi-circle with its 11 time zones
No planet is a perfect ball tho
Ernie good enough
I haven't done the math, but you might be right. I know that our moon has roughly the same surface area as Australia, and Pluto is smaller than our moon, so it's definitely possible that a country on Earth might have a larger surface area than Pluto.
I don't understand why people consider the label 'planet' as some sort of status symbol. The point of these labels is to classify groups of objects with similar characteristics together and allow for differentiation between other classifications. People act as if some insult was dealt to Pluto by its current classification.
anthropomorphization
+Francesco Magnoni The case may be that some people care more for a lifeless ball of ice 7.5 billion kilometres away than they do for many of the issues on our own planet with real people who feel and experience them...
Toby Martin it's easier to talk about insignificant and far away things rather than issues abuot which everybody has conflicting opinions and hard feelings.
if i just meet someone, i'd rather talk about weather than about cancer.
Francesco Magnoni That much is true. Obviously I have no qualm about people discussing planets! But when people get riled over the status of Pluto as if it's been personally offended...
+violacrb
You are not one of us.
This is not directly an insult but that doesn't mean it can't make you feel sad or excluded.
And for those of us that grew up with Pluto being one of planet buddies that is basicly what those mean scientist guys have been telling us about Pluto.
Not one of us not a planet.
Thanks fpr short video just what i wanted
Thank you for talking about me!
I love Pluto, it is my favorite planet.
Pallas, Ceres, Pluto, Eris, the other names he mentioned, and several more, aren't asteroids or anything like that. They've been re-named dwarf-planets, which in my opinion is still a planet I will continue to acknowledge them as such.
Carter Kane Good luck reciting all their names.
@@WilliamStrealy1 Irrelevant.
The three criteria for planetdom, are 1, it must be spherical, 2, it must have a regular orbit around the sun, and 3, it must have cleared its path of orbit. so because pluto is in the Kuiper belt, it has not cleared its orbit, and is therefore not a planet, and is instead a dwarf planet
Uuuuhhh the earth is a oblong and it isn't completely a sphere
I think that he meant to say that the object must have a greater mass than all the other objects within its orbital path. Since Pluto is small and within the Kuiper belt this isn't the case.
It's still spherical up to a point.
the problem with that rule is since pluto is located in the kuiper belt, it would need a giant ass gravity to clear it's neighborhood, so high, even Earth wouldn't be able to do it, so how is thay fair? On top of that Neptune also has multiple aestroids in its orbit so it should be considered a dwarf planet? This is when the rule is slightly messed up
Earth isn't located in the Kuiper belt though, it's in the "Earth belt". Earth shares this area of the solar system with a handful of asteroids and the Moon.
The difference between Earth & Neptune and bodies in the kuiper belt like Pluto is that both of those planets dominate their "belts". Pluto comes nowhere close to being the dominant force in the Kuiper belt.
So "Clearing its orbit" really means "Clearing its orbit of competing bodies". Hope that helps.
Damn. Today I'm watching videos of this channel every now and then just to find this 8 year old piece, which was created and uploaded when I was only 15. There was an internet before I found it and it gets more and more clear the deeper I go xD
1:42 and following made me laugh quite a lot :D the drawings are fantastic
I think it's cool that in Sailor Moon, they have Sailor Soldiers for all the planets, and the moon, Pluto, Ceres, Vesta, Pallas and Juno. It's a big party.
Ok.
And the only way to save the planet is by making high school girls Superheroes. The reason they give is just made up a little bit into the series. And it's just an excuse to let the animators draw naked high school girls.
lol at the low-res image of Pluto.
1:22 9 years have passed and now my non fullscreen cellphone can show pluto, how crazy is that
"A planet you've never heard of, Ceres" _Opens space book I was given when I was 7_ *A LIE*
There should be no debate, there are certain requirements needed to be classified as a planet.
1. Must orbit the sun, Pluto does this
2. Must be formed into a sphere under it's own gravity, Pluto has done this
3. Must clear it's orbit of other bodies, this is where Pluto fails to meet the classification, there are thousands of other bodies nearly the size of Pluto or larger in it's orbit.
Isaac Ortiz Damn dude, what's up your ass?
But seeing as those "classifications" were made up after it was called a planet. It's like telling a midget they are a person and then saying later they aren't.
bromixsr But our definition was flawed from the beginning. Planet is far to broad a term to classify the objects in our solar system, if we did not change the definition there would be hundreds of thousands of planets in our solar system, a separate classification for dwarf planets is a good idea.
bromixsr The more we discover, the more differences we find. The more differences we find, the more we need to categorize. Your logic suggests that we should still call the world "flat".
GuiltyMiner0343
I can agree with acceptation to 3-
I would add an and/or "Is absorbing nearby masses into itself (smaller bodies)." Pluto still would not meet the requirement, but planets in the final stages of forming or with rings would pass.
That was incredibly helpful! Gosh why didn’t they just start with The Kuiper belt in school and use that as a starting point to then break the news that we were wrong about Pluto.
My school did in the mid 90's. We learned about the keiper belt (also pluto as a planet). But my teacher would refer to pluto as a "Neptunian Object" much more than a planet. And explained "there were many neptunian objects beyond neptune".
He was a head of his time as a teacher.
1:25 I'm watching this on my phone in portrait mode and I can still see Pluto.
This video was made in 2012 before people could even think of handheld HD displays being commonplace.
@@CaptainX2012 is CZcams even existed 2012? Well i learn new things every day (also i could do basic math by looking up how old was this video but meh, i am lazy)
@@fallendown8828 CZcams was made in 2005
Love your informational videos 🤍
I think people forget that science is the process of becoming less and less wrong over time and not an ideology.
Sean Keuroghlian-Eaton finally someone gets it!
An alternate account huh?
it's not arbitrary tho? it's a way for humans to categorize things to make them more manageable and relevant to study, all of the things labeled in this video are solar bodies in our solar system, and we keep breaking them down to more and more specific taxonomies, solar bodies to plants or dwarf plants or moons etc, then they're described more specifically as terrestrial planets or gas giants or what have you, and then you describe them as their name, these definitions are useful for studying properties and determining properties of like objects we can't study as directly
We discovered new information and were faced with three choices. A) Introduce dozens of new planets. B) Leave it at 9 planets, but give up any meaning the word planet has. C) Demote Pluto.
We picked C.
No Science has never said anything that's been proven false. Babies DON'T feel pain. The Earth IS flat. It's obvious that the first thing Science says is always right
If Rick and Morty taught me anything, its that Pluto is all political.
Pluto is a cold, cold Celestial Dwarf.
You mean planet, a cold cold planet
Yomu nope
its a *blurp* dwarf
this video made me feel less sad about Pluto’s fate, thanks!
Same
Same
FYI, at 3:38 Kuiper Belt is misspelled as "Kupier."
Pluto will always be a planet in my heart.
Mercury, Venus, Earth, Mars, Ceres, Jupiter, Saturn, Uranus, Neptune, Pluto, Eris, Quaoar, and Sedna
The 13 planets.
You should get that checked out. Having a planet inside of you must be painful
In your HEART? OMG the stupidity.......Will you please explain to me why being called a "planet" one day and then a "dwarf planet" the next is perceived by so many of you to be a "demotion" at all? Why is simply being called a planet "better" than being called a dwarf planet? A giant ball of rock and ice that's 8 LIGHT HOURS from the Sun DOES NOT give two shits what human beings call it.
well, even if the planets won't accept pluto, i'm glad he found his home with the kupier belt 🤧🌸💕
"You hear what happened to Pluto? Messed up right?" - Gus
love how our moon is called the moon
ha ha me too
It's actually called Luna, just like the sun is called Sol.
This was incredibly well done, I am surprised I haven't seen this presented this way before. It certainly makes the asteroid belt more interesting knowing it previously had planets within it.
Pluto is also smaller than Russia
pluto is smaller than my dick
+TR-8R i have feelings you know
_ Pluto atleast you're bigger than eris
+_ Pluto Well, You are more big what the Vatican City....
TR-8R so you saying its small?
Happy 10 years this video!! 😊
The music for this is great
Watching this in the year 2018, after the New Horizons flyby of Pluto, it's insane how much better pictures we have of Pluto now. My mind is just completely blown by this.
Ooo don't forget the Oort Cloud, you gotta love the Oort Cloud
We’ll never forget that Uranus is a gas giant
short answer: no. 😭😭
4:20 Another way to classify it is:
- Jupiter, Saturn, King George, Neptune
- Some rocks
Who decided to label floating rocks in space anyway
+Xianaic it was just the Greeks seeing "wish those dots wander", referring to the fact that the stars move together but the planets move completely differently from our sights, wander becomes plane and wanderer becomes planet.
It's really our fault for never translating the names to keep them ambiguous.
Respect Pluto's dwarf pronouns, capitalist pigs.
+Po Yao “Kiro” Cheong EVERY civilization and culture has labeled them for the same reason that they label EVERYTHING on Earth: it's what we do.
Kiro Notkiro
So when the time comes for conversations, we don't have to say "That floating rock in space" to identify it.
Look, I don't care what they are.
Haumea is my favourite dragon egg in our solar system.
It's sorta reptile egg shaped, has a big red patch, 2 moons and a ring system.
Everyone is talking about the old photo of Pluto but nobody is meantioning that Ceres also wasn't photographed in HD until 2015
1:34 I see that space odyssey reference
This video, though informative, leaves out a crazy important detail :
The International Astronomical Union in 2006 defined a planet as a celestial body that :
a) Is in orbit around the Sun. b) Has sufficient body mass for its self gravity to overcome rigid body forces so that it assumes a hydrostatic equilibrium shape, i.e. nearly round in shape. c) Has cleared the neighborhood around its orbit.
Now, Pluto can't clear objects out of its path. Hence its called a dwarf planet.
Very true
+chorosso They are the ones which either do not have gravitational boundation with a star or have been thrown off from their orbit. I don't know the definition though.
+chorosso because theyre orbiting their sun.
and the exoplanets argument does not make any sense
***** That is bullshit. You obviously know what is going on but you refuse to call pluto a dwarf planet.
BRUH
***** WHAT WAS YOUR POINT THEN?
"Here it goes again... Just shrank a little..."
Even though the video makes complete sense and I completely agree with the grouping and clarification, its still hard for me to think of Pluto as not a planet. Because I grew up being taught Pluto is a planet and I still think of Pluto when I think of "the things in the sky that we have named"
3:38 Not "Kupier" but "Kuiper" Belt.
Bruh this video is seven years old
@@16.jonathanoneal69 so. No one manage to catch that cuz people didnt know much of anything of these things. He had one job
Thank you, that was bugging me.
That, and the small bit with Galileo was inaccurate, but the video's not really about history. Some things we have to let slide sometimes, though you're not wrong for pointing them out.
He actually pronounced it perfectly, but spelled it incorrectly
czcams.com/video/Bwwkz6xFtmQ/video.html
The three criteria that defines a planet:
1. Spherical under own gravity - Check
2. Main body of orbit around star (excludes moons) - Check
3. Object dominates its orbit - Pluto fails
But this definition would result in Eris being called a planet!
Actually, it doesn't. It's only a few percent bigger than pluto, and neither of them are massive enough to "clear" their neighbourhood from other smaller objects (unlike Earth which contains over 99.99% of the mass of where it orbits). You misunderstood the second criteria (maybe cus I phrased it poorly). It is an official definition by IAU
Cruuzie Misunderstood the THIRD criteria**
It was the third one I misinterpreted, I incorrectly took "dominates orbit" to mean largest in its orbit - my bad!
Christopher Bradley Eris is a planet. Why is that a problem? It is now believed to be marginally smaller than Pluto though 27 percent more massive, which means more rocky and therefore more planet-like.
every couple of months i find myself watching videos about the solar system, only to be in awe at the scale of it all and at all the things left unexplored, until I eventually sink into nihilism about the fact that I will never be able to visit any of them.
It takes me back to watch this video and see that image of Pluto. A time before we got a clearer picture of the dwarf planet.
I could see Pluto without full screen hd mode
I could see in 144p
@@mikeyreza I think youtube has changed how it compresses videos... So it makes a small item sorrounded by a plain colour bigger than it actually is.. Probably for reading text in lower resolution
896x504
Though I'm the kind of person who subscribes to the notion of 'if it ain't broke, don't fix it', I agree with the reclassification of Pluto. With the discovery of Eris, Sedna and others, the list of planets would have ballooned out of control. Before 2006, no one had seriously considered what truly distinguishes a planet from other large-ish celestial bodies like Ceres in the asteroid belt. A line had to be drawn, and the International Astronomical Union did just that. We now have a stable list of bodies that covers all the 'main' ones in our solar system and excludes objects which are not large or 'special' enough.
A line did not have to be drawn. There is absolutely no scientific basis to artificially limiting the number of solar system planets to a low number. We already know the universe has billions of galaxies, many of which have billions of stars. Would we say Jupiter can't have 67 moons because kids can memorize only four? Memorization is not important to learning; what is important is understanding the different types of planets and their characteristics. If our solar system has 50-100 planets, then that is what it has. Why distinguish bodies like Ceres or Pluto from the larger planets when they share the same characteristics as those planets with the only difference being they are smaller versions of them? Also, we do not have a stable list of main planets because the IAU decision is contested by many astronomers, and there is no consensus in the field one way or the other.
It was politically convenient to preserve the memoriseable, small 'club' of planets. Personally, my concept -- and daresay many peoples' concept -- of the word 'planet' is a large body, one of a few rather than one of millions. You do, however, make some good points: convenience of memorising is not, in the grand scheme of things, important
plusplusplusplusp Thank you! I think we are going through a paradigm shift. The rapid discovery of exoplanets means it's only a matter of time before planets, like stars, number in the billions when we consider just our galaxy alone, never mind other galaxies! The reaction of the public and of many astronomers to what might have been a politically convenient position has not generally been positive. People like the idea of adding new planets and dislike taking planets away. As I'm sure you know, the term "large body" is very relative. Earth is hardly "large" compared to Jupiter, and the Sun is hardly large compared to some of the giant stars. Eventually, we will have to view the concept of planet based on subcategories such as terrestrial, jovian, dwarf, etc., with "large enough" meaning the object is large enough to be rounded by its own gravity.
Casually watching this while finishing my solar system project due tomorrow.
this have more information of pluto in 4 minutes than a whole year in middle school
"let's discuss a planet you've never heard of. Ceres"
Not if you play Warframe 😁
Or watch the Expanse
Get Clem!
Greetings Operator, Ordis is happ-ANGRY!
My uncle just installed that lol
My computer's hostname is "ceres"...
3:37 Spelt Kuiper wrong?
***** Learned or learnt? Ever heard of non-American English? prntscr.com/96kcp4
+Xianaic Uploads minecraft videos and tries to correct grammatical errors where there are none, you're the worst kind of person.
+krinord the fact that he makes minecraft videos has absolutely nothing to do with this, it is completely irrelevant
***** i can type perfectly fine, but i honestly can't be bothered. triple-checking my comments just so some guy won't be able to reply with a snarky correction of my comment is not something i want to do
+TheJman0205 "You also need to end sentences with a period" - Who are you to tell us what to do?
Seriously, stop being a grammer nazi
Now I feel happy knowing that Pluto found its home.
Commenting for the algorithm by the way a very imfmative a great upload that i thoroughly enjoyed 😉