Why Isn't Pluto a Planet Any More?

[@JestTTV]

its okay pluto, im not a planet too

[@Khether0001]

holy crap... now it makes perfect sense! Sometimes explanations done like this is just what we need...

[@pychoshow]

i know right Pluto was my favorite planet when i was a child! =(

[@daff1959]

just wanted to say thank you for all of these! They are so educational.

[@asteroidceres3823]

Earth said it was VERY painful. I remember being in a panic after hearing Earth's moons screaming. D:

[@GinaGlocksenFan]

I was born believing it was a Planet, and I shall die believing it's a planet.

[@PvblivsAelivs]

From what I read about it, a "definition" was concocted specifically to exclude Pluto. They claimed that Pluto wasn't a planet because it didn't "clear its orbit" (Neptune intersects.) But if the definition were genuine, Neptune would be disqualified for the same reason.

[@cyborgbadger1015]

it was a planet but misbehaved and was therefore made to sit on the interplanetary naughty step.

[@asteroidceres3823]

True. I guess my problem is that the IAU was just going by their theory. They don't know that every planet had objects in their paths. I used to be a moon, but now I am a dwarf planet. I guess I was just upset because I am a dwarf planet, and Pluto's best friend. Like him, I am a former planet. So, I guess I was just not me at that time.

[@ASMRSoldier]

its like he knew i was upset about pluto not being a planet!! lol

[@sparklesandsmog]

Poor Pluto, he got booted just cuz of his size. Isn't there some sort of intergalactic law against planetary discrimination? :)

[@asteroidceres3823]

Oh. I think I'll go talk to him.

[@kpheider]

The clearing of the orbit might gravitationally breakup a double planet pair (where the two bodies are of very similar mass). But then again you could call the Earth-Moon a double planet system depending on the definition used.

[@aussiecadetsam1286]

I'm pissed that he didn't even give us the definition of a planet!!!

[@asteroidceres3823]

Wow. Just, wow.

[@asteroidceres3823]

THANK YOU!!!!!!! SOMEONE UNDERSTANDS ME! :D

[@Raterme1on416]

Neptune looks like Blue from Foster's Home

[@JcDizon]

I like the animations for this video. It looks like a good video to show to people who can't get over that Pluto isn't considered a planet anymore

[@asteroidceres3823]

They put everything into consideration, but yes, explain it please.

[@aphextwin1986]

[@asteroidceres3823]

And you're not alone. Some comments on some videos say that the IAU is crud.

[@PicoriPi]

So all of the planets started out as rings similar to the astroid belt and kuiper belt. The largest objects in these belts began picking up the very small ones as they orbited around gaining mass. As it gains mass it picks up larger and larger objects. Eventually it picks up all of the objects forming the entire belt into one singular planet. The astroid belt and kuiper belt didn't have objects large enough to "clear the neighborhood".

[@ddawn23]

This explanation is really really well done.

[@nigelcje]

Hahaha me too. And the illustrations are so cute!

[@tathya7]

poor pluto. don't worry, you're still in our heart!

[@phlewis86]

This video has helped me to get a better understanding of things. Great job.

[@lydiahoover]

Yay! Now I feel all warm and contented inside. Damn. That's good.

[@Saibot00]

i cant wait to tell my kids when im older... "I was alive when Pluto was still a planet!" lol!

[@emancoy]

pluto is no longer a planet. I heard about it, but didn't had the time to check out why. Finally, I heared the explanation. thanks so much.

[@Ecompass4]

lol imagine the mix up at the time.. sigh, and to think that the memorization of the planets in our solar system (including PLUTO!!) were drilled in our heads at such a young age..

[@tirtigos]

You did a great job.

[@asteroidceres3823]

And by the way, the thing was last updated in 2011. So, it isn't up to date.

[@WhrsTheMoneyLabowski]

Nice, concise, interesting, well informed videos guys. Well done

[@kpheider]

Actually per the IAU definition the primary feature of a planet is the ability to gravitationally clear the orbit of debris. As new debris comes crossing into the zone, it will cleared over a short time scale.

[@asteroidceres3823]

Very few people like them. But of those few, I seem to be the one who comes across them most. Also, it isn't just them. It is every scientist in the world. They hate tiny dwarfs like Pluto and me.

[@realIBeliX]

that was mt question, why pluto isnt planet anymore, this answered to me brightly.

[@forthelolz4053]

hes here now

[@ND066]

Thank you Mr. Smarty.

[@jman46241]

Do any of the other Dwarf Planets that have been discovered have moons?

[@Crowbot28]

Though it is probably made for younger kids, I admit a childlike wonder when we talk about astronomy. Fantastic vid!

[@xXJacobBuckXx]

I like how simply put this is. Perfect for those people who argue about Pluto just for the sake of arguing. Most don't know why it's a dwarf planet, they just no it's not a planet anymore...

[@PicoriPi]

More up to date than your citeless ramblings. For the third time, what is this science that they decided not to consider when they reclassified the solar system? It's also important to keep in mind that these classification don't only help us understand our own solar system, but others that we are discovering. If you'd like me to explain clearing the neighborhood, I will do that for you.

[@GreatLandStander]

Good one, you really had me going

[@asteroidceres3823]

Actually the guy who said that is the same guy I am arguing with.

[@billybobsteele]

That one of the differences between religious people and scientists/atheists. A good explanation!

[@forthelolz4053]

have to go see you

[@PicoriPi]

It does make sense.

[@skateDT]

At 2:10 he says that Plutos' orbit intersects with that of Neptunes. If so, does that it mean that it is possible for the two to collide? I understand even if it is possible, the chance of that would probably be 0.01% to actually happen, but still, it's an interesting thought I think.

[@iheartwillow]

pluto the planet will be in my heart forver...

[@lettuceeeeee]

Hey! I like pluto, even in dog form! He's cute! And hes not stupid, Mickey trained him very well. :)

[@TheDSGuy]

Haha, Pluto!

[@Cooldude518]

i would like to make a point to all those who complain that they can't change the status of pluto. Go way back when we thought the world was flat, when they said it was round few accepted the new concept but we got used to it. we need to think of this like we did then and we need to accept the change. That and they do have reasoning behind it. it's not like they did it on a whim.

[@cherylwhoa]

This is very informative :D

[@miklos.]

You're right, Pluto is still a planet. A dwarf planet. Nothing has changed. Most Trans-Neptunian Objects / Kuiper Belt Objects are comprised of ices from various elements. So you cannot call them asteroids because that denotes a rocky nature. These objects are not (in high percentages at least) rocky.

[@Relugus]

Love the animation.

[@Kaayuu]

thanx robert!!

[@3089280288]

Thank you C3P0.

[@TeaScholar]

Size did make a diffference but also placing and the way it rotates around the sun. Generally though, if pluto were as big as say, jupiter, then it wouldn't be booted imo.

[@GuruGulu]

What would happen to pluto when our sun reaches the red giant phase? Will it melt since it's practically ice? And what about jupiter, saturn, uranus and neptune.

[@Plutoizreal]

nawff7 you are right as long as I can remember Pluto has been a planet and they should not take that title away.

[@dynastyst]

i love these videos, so helpful Thanks!

[@F00dTube]

Haha, that's what I was thinking. Nice animations.

[@TheRedPlanet]

very informative! thanks...

[@brendon1000]

Pluto is THE ninth planet and it will always be to me! even if we find another larger planet

[@beeftothetaco]

1:05 OR SO HE THOUGHT

[@asteroidceres3823]

All right. Just having an argument with a dude who (stupidly) likes and follows the IAU and that "they're always right"....

[@EdmacZ]

Poor Little Pluto.

[@icecorescientist]

pluto will always be there!

[@chikinpotato11intechnicolor]

there's a lot of those, they're called "Hot Jupiters" because they're extremely close to their parent star, not exactly new news.

[@MrCalhoun556]

2012 is gonna be so much fun.

[@lettuceeeeee]

when the planets have faces they kind of act like club penguin's puffles to me XD

[@PhilosopherEight]

Then if we are talking about moons big enough to be truly a moon ( > 100 km diameter, mostly-spherioid shape), then these asteroids are actually planets. The primary feature of a planet is that it represents a gravitational source that causes nearby objects to orbit IT instead of the sun. It is a hierarchical distinction in the gravity system of our solar system. Any object that is massive enough to have moons, which themselves are massive enough to have sub-moons, is a planet.

[@asteroidceres3823]

Um... ok? What does the IAU have to do with 9/11?

[@kpheider]

I have to pick on this some. Most objects orbiting the Sun are not in hydrostatic equilibrium either. Some day the IAU needs to define a MAJOR moon.

[@Bealocwealm]

I admit, I only watched this because your last name is Hurt, and I was thinking John Hurt.

[@NicosMind]

Well thats cause he didnt mention the differences in the classifications between Dwarf planet and Planets. One thing i know is that if you brought Pluto closer to the Sun it would staart yo melt and grow a tail being that its mostly made of ice.

[@forthelolz4053]

I KNOW THE HIJACKERS NAMES

[@blindandwatching]

Pluto is a "dwarf planet" now, so it is still a planet.

[@forthelolz4053]

ITS NOT MY HEAD

[@Sowff]

Hurt fails to mention that only 424 members of the IAU voted, leaving over 9,500 members voiceless, and the IAU has not admitted that the vote was problematic. There will be a debate soon about Pluto on teevy. Stay tuned. This debate is far from over.

[@PhilosopherEight]

Yes, but as long as there is at least 1 such moon which maintains hydrostatic equilibrium orbiting a body, that body is a planet. Just because additional smaller moons cannot maintain HE doesn't disqualify the planet classification.

[@forthelolz4053]

hes off now

[@forthelolz4053]

THE REASON I HATE THEM BECAUSE THEY DEMOTED PLUTO >:(

[@Hadra568]

So was Ceres reclassified twice? First as an asteroid, then as a dwarf planet? What's the difference between them?

[@Armidillodude]

and is Jupiter and saturn hot or cold? I mean they look like they are burning stuff but they are far away from the sun so im confused

[@ieatu111]

Just like William Hung. :D

[@joshuammeyer]

He didn't say that the problem of naming them was the reason pluto was demoted, he simply said it's convenient because there aren't as many planets to learn. Don't misread :)

[@1rover1138]

Good-bye Pluto. I miss you already.

[@xxblaruxx]

poor little plutey!!! join our facebook appreciation group! search for this: BRING PLUTO BACK *remember: you like pluto, pluto likes you*

[@PicoriPi]

What scientific fact are they ignoring? Also who said that Pluto is the most popular planet? No one I know cared about Pluto 10 years ago. Pluto being classified as a planet was absurd and it needed to be fixed. The third part of the planet definition is a simple way of distinguishing the different between planet, and dwarf planet.

[@uliseto]

there goes my real state in pluto...

[@bartz_man]

Well, Earth being a bubble changed lots of stuff in science, let alone the understanding of physics. What does Pluto being a planet (or actually not being one) change overall? Nothing, except that the image of the "Sun and 9 planets" breaks apart. They could've just made an exception for poor little Pluto. But I'm just narrow-minded...

[@lepape2]

Well, i'm nearing 4000 now... i don't how i managed to even watch that much. About this video: I always wondered why Pluto was not a planet anymore. If astronomers where to tell my future sons at school that there would be more than 20 or 30 or even 40 planets in our solar system, then i don't know if he would have great grades anymore. []^_^[] I'm going to watch rest of your videos. They are most interesting.

[@linkoovi]

Pluto will allways be planet for me :) lol

[@forthelolz4053]

HOW ARE YOU

[@chikinpotato11intechnicolor]

just like dwarves are part of the human species, Pluto is just like a dwarf. Stiil a planet (A small one)

[@JeremyRatzlaff]

that was cute.

[@vdizhoor]

Pluto will avenge this humiliation! Go Pluto! :)

[@Armidillodude]

Can I contact Tim pyle and ask him about this animation program?

[@forthelolz4053]

NO ITS NOT MY HEAD ANYWAY PLUTO IS ONLINE