Why Isn't Pluto a Planet Any More?

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  • Published: 13 February 2007
  • Dr. Robert Hurt explains why Pluto got... well... plutoed.

Comments • 249

  • Luis Hidalgo
    Luis Hidalgo  6 years back

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

    • Cyborg Badger
      Cyborg Badger  6 years back

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

      • Davidoff
        Davidoff  6 years back

        Hhahahahahahahaha funny but true XD

        • Nelson Baietti
          Nelson Baietti  6 years back

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

          • Aussie CadetSam
            Aussie CadetSam  6 years back

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

            • Larchevis
              Larchevis  6 years back

              Шляпа. Есть понятие престиж территории. Не для кого не секрет что в России территория с максимальым престижем Московсая область, за ней идет Краснодар, на последнем месте Магадан. Этим явлением определяется цена территории. То же самое и Плутон. Риэлторы просто скинули престиж этой территории чтобы снизить цену.

              • Asteroid Ceres
                Asteroid Ceres  6 years back

                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.

                • PicoriPi
                  PicoriPi  6 years back

                  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".

                  • Asteroid Ceres
                    Asteroid Ceres  6 years back

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

                    • PicoriPi
                      PicoriPi  6 years back

                      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.

                      • ratermelon
                        ratermelon  6 years back

                        Neptune looks like Blue from Foster's Home

                        • for the lolz
                          for the lolz  6 years back

                          hello

                          • Asteroid Ceres
                            Asteroid Ceres  6 years back

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

                            • Asteroid Ceres
                              Asteroid Ceres  6 years back

                              And, by the way, Earth ranks below Pluto, dumb butt.

                              • Asteroid Ceres
                                Asteroid Ceres  6 years back

                                Dude, NASA isn't always right. I have paid attention, and say, a song on the solar system without Pluto, people start screaming ,"WHAT ABOUT PLUTO?" or "Where's Pluto?". Pluto might not be the most popular planet, but many, many people are angry at the IAU. And you can't even identify that you're talking to Pluto's best friend. The IAU are blind to the reality that their decision was not taken lightly. You to. You're too stupid and don't pay attention to reality. Sorry. Truth hurts sometimes.

                                • PicoriPi
                                  PicoriPi  6 years back

                                  According to NASA Jupiter is the most popular planet, and Pluto ranks below the Sun and our Moon. just because you are part of a vocal minority that is man at a group of professionals for doing their job, doesn't mean your cause is the most popular.
                                  You have yet to tell me what science it is you think they are ignoring. 11 planets? Don't you mean 13? There are currently 5 official dwarf planets. There are also 4 more strong candidates.

                                  • for the lolz
                                    for the lolz  6 years back

                                    ok

                                    • for the lolz
                                      for the lolz  6 years back

                                      ok

                                      • for the lolz
                                        for the lolz  6 years back

                                        ok

                                        • for the lolz
                                          for the lolz  6 years back

                                          hello

                                          • for the lolz
                                            for the lolz  6 years back

                                            hes here now

                                            • for the lolz
                                              for the lolz  6 years back

                                              hes off now

                                              • Asteroid Ceres
                                                Asteroid Ceres  6 years back

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

                                                • for the lolz
                                                  for the lolz  6 years back

                                                  ITS NOT MY HEAD

                                                  • for the lolz
                                                    for the lolz  6 years back

                                                    NO ITS NOT MY HEAD ANYWAY PLUTO IS ONLINE

                                                    • Asteroid Ceres
                                                      Asteroid Ceres  6 years back

                                                      Um... are you ok? Or is 9/11 is your head?

                                                      • for the lolz
                                                        for the lolz  6 years back

                                                        I KNOW THE HIJACKERS NAMES

                                                        • for the lolz
                                                          for the lolz  6 years back

                                                          IM SO GLAD THAT BIN LAADEN IS DEAD

                                                          • for the lolz
                                                            for the lolz  6 years back

                                                            I KNOW THE HIJACKERS NAMES

                                                            • Asteroid Ceres
                                                              Asteroid Ceres  6 years back

                                                              Wow. Just, wow.

                                                              • Asteroid Ceres
                                                                Asteroid Ceres  6 years back

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

                                                                • for the lolz
                                                                  for the lolz  6 years back

                                                                  NOTHING I WAS JUST ASKING

                                                                  • for the lolz
                                                                    for the lolz  6 years back

                                                                    ANYWAY WHAT WAS IT LIKE ON THE DAY OF 9/11

                                                                    • Asteroid Ceres
                                                                      Asteroid Ceres  6 years back

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

                                                                      • for the lolz
                                                                        for the lolz  6 years back

                                                                        I KNOW HE SAID IM INTERSTED IN 9/11

                                                                        • Asteroid Ceres
                                                                          Asteroid Ceres  6 years back

                                                                          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.

                                                                          • for the lolz
                                                                            for the lolz  6 years back

                                                                            I WILL NEVER JOIN THE IAU

                                                                            • Asteroid Ceres
                                                                              Asteroid Ceres  6 years back

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

                                                                              • for the lolz
                                                                                for the lolz  6 years back

                                                                                BUT SOMEONE SAID I MIGHT BECOME A MEMBER OF THE IAU NEVER

                                                                                • Asteroid Ceres
                                                                                  Asteroid Ceres  6 years back

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

                                                                                  • for the lolz
                                                                                    for the lolz  6 years back

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

                                                                                    • Asteroid Ceres
                                                                                      Asteroid Ceres  6 years back

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

                                                                                      • for the lolz
                                                                                        for the lolz  6 years back

                                                                                        I AGREE THE IAU SUCK

                                                                                        • Asteroid Ceres
                                                                                          Asteroid Ceres  6 years back

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

                                                                                          • for the lolz
                                                                                            for the lolz  6 years back

                                                                                            HOW ARE YOU

                                                                                            • Asteroid Ceres
                                                                                              Asteroid Ceres  6 years back

                                                                                              Hi human :D

                                                                                              • Asteroid Ceres
                                                                                                Asteroid Ceres  6 years back

                                                                                                Ok, the tributes, the songs, and the comments people are making a about a song without Pluto? And that isn't popular. Let me guess, you have not seen it.
                                                                                                The 3rd definition was a good way of being stupid. Like you, they know nothing about science. If anything is absurd and needs to be fixed, its you... and the IAU itself. The IAU could have accepted 11 planets and left the other objects alone, but noooooooo. 11 planets was to much for their stupid minds.

                                                                                                • for the lolz
                                                                                                  for the lolz  6 years back

                                                                                                  hello ceres :D