• Björn Tantau@swg-empire.de
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    8 months ago

    Back in school we used to have a book with an illustration of the solar system with all the planets in neat almost circular orbits in a plane around the sun. And there was Pluto with its skewed orbit that was all over the place. My teacher couldn’t convince me that it should be lumped in with the rest of the planets.

    I felt satisfaction when Jim Carrey’s kids in Me, Myself and Irene complained that it shouldn’t be a planet. That was the first time I ever heard a person say that.

  • Destide@feddit.uk
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    8 months ago

    It you class it as a planet you can have to do it for all the others

  • Liz@midwest.social
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    8 months ago
    1. The rocks, ice, and gas out there doesn’t give a shit what we think.

    2. Arguing that a planet must have cleared its orbit of other major bodies invokes an arbitrary size and location judgement for what constitutes a planets orbital space and what constitutes a major body.

    3. The argument that the inclusion of Pluto would require the inclusion of a lot of other planets and that that is obviously bad/wrong is absurd. Why can’t a system have a whole lot of planets?

    I propose an unoriginal definition of a planet:

    1. Large enough to become spherical under its own mass.

    2. Too small to fuse hydrogen, regardless of its presence.

    I think we should really consider the term “planet” to be somewhat vague, and use the term “proper planet” when referring to all the things that match my proposed definition. The proposed definition includes things we have other names for and that’s okay; we just use those other names when we need the extra specificity, like moon, rouge planet, dwarf planet, etc.

  • diverging
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    8 months ago

    The stupidest consequence of the definition is not the classification of Pluto, but that there are only eight planets in the entire universe.

    a planet is a celestial body that:

    1. is in orbit around the Sun
  • threelonmusketeers@sh.itjust.works
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    8 months ago

    Always “Pluto, Pluto, Pluto”. Why does no one ever remember Ceres, Eris, Haumea, and Makemake? They’re each as much of a “planet” as Pluto is.

  • affiliate@lemmy.world
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    8 months ago

    new planet definition is dumb and i don’t subscribe to it. pluto is always a planet as far as im concerned

  • Olhonestjim@lemmy.world
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    8 months ago

    Gas giant planets, ice giant planets, rocky planets, dwarf planets.

    I don’t see what the big deal is.

    • magnusrufus@lemmy.world
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      8 months ago

      The deal is the weird part where they made a specific point of and big deal out of the new classification not being a type of planet despite having the word planet in the name.

    • dQw4w9WgXcQ@lemm.ee
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      8 months ago

      The “big” deal is that a ton of celestial bodies of comparable size to pluto would have to be considered either as planets or as general debris. Finding a clear definition which would include pluto as a planet and not include other stuff would be very impractical and possibly nearly impossible.

      But the biggest fuck up was to name a non-planet a “dwarf planet”.

      • Olhonestjim@lemmy.world
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        8 months ago

        I’m well aware of the existence of countless dwarf planets in the solar system, and the naming issues that arose from the discovery.

        I don’t mind that they called them dwarf planets. But I don’t know why everyone got so upset about it. It sounds like just another class of planet to me, which seems quite appropriate.

        I agree that they marketed the change about as poorly as they could.

        • dQw4w9WgXcQ@lemm.ee
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          8 months ago

          Sure, people have taken the matter way too personal. That’s mostly people who have a nostalgic relationship to their childhood classes about “the 9 planets”.

          As I’ve read, they made the definition in the particular way to remove gray areas of inaccurate meassurements. A celestial body shouldn’t be wrongly classified due to being a few kilometres larger than some limit, then be reclassified later due to better meassurements. Planets need to be somewhat spherical, orbit a star and clear their orbit from significant debris. They made a great system which doesn’t leave big gray areas. A planet is defined in a well thought out way by people way smarter than me.

          And then they go and call the non-planets “dwarf planets”.

          • Olhonestjim@lemmy.world
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            8 months ago

            I’ve heard some push to just call them all “Worlds.” Planets, moons, asteroids, etc. and all, which is also fine by me.

  • oce 🐆@jlai.lu
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    8 months ago

    Only USA people are arguing against it be cause of national pride, it’s the “planet” they had discovered. Among astronomers the consensus is established.

    • chatokun@lemmy.dbzer0.com
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      8 months ago

      You overestimate how many of us even know that. It was probably mentioned in school I guess, but this is the first I remember hearing it. I did do kindergarten to 2nd grade in a different country though.

      • oce 🐆@jlai.lu
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        8 months ago

        Why do you think you were taught about it? What you learn at school is heavily influenced by the “national myth”. It’s most visible in your history lessons, but science is also impacted, it will be biased towards your culture’s scientists and discoveries. I am observing that in Europe too, I’m not saying the USA are worse on that.

        • chatokun@lemmy.dbzer0.com
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          8 months ago

          That’s why I assume ir was taught, but as I mentioned I have no memory of it, so it wasn’t taught that strictly. I went to school in a county that had schools named after “Stonewall Jackson” and the like, so I’m sure biases were baked in.