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Cake day: June 11th, 2023

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  • nexguy@lemmy.worldtoScience Memes@mander.xyzSad Ganymede noises
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    5 months ago

    Can you explains the knitpicking? They specifically decided that only objects orbiting our star can be Planets. It wasn’t an oversight but intentional. How can that be explained? Why do that?

    Also, how can mercury be explained? It clearly violated one of the 3 rules with no given exception other than they just decided it can be a planet. Why?

    25% of the 8 objects they wrote rules for needed an exception to make the cut. That doesn’t seem odd?


  • nexguy@lemmy.worldtoScience Memes@mander.xyzSad Ganymede noises
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    5 months ago

    There is nothing difficult to grasp. They made rules then decided for no reason to let mercury break the rule. Why? Why not make mercury a dwarf planet instead of allowing it with no rule exception other than…just because.

    This is not bioligical… those MUST follow the rules. This was a traditional unscientific list… Exactly like constellations. Why not start removing stars from constellations because they are too far away? Except a couple of them just because.

    This IAU conference vote was not unanimous… it was very contentious and many wanted a more geological and broad definition rather than an earth centered definition that literally ONLY applies to our solar system. “Planets” can only exist around OUR Sun. Think about that.


  • nexguy@lemmy.worldtoScience Memes@mander.xyzSad Ganymede noises
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    5 months ago

    I understand the exception created for Neptune. But they had to create this exception… for their own brand new rule… in order to classify 8 things. Notice the exception is written very specifically just to keep pluto from “clearing” is orbit.

    Another IAU rule is that the body must assume hydrostatic equilibrium(nearly round). Mercury does NOT assume hydrostatic equilibrium. They knew this.

    Guess what? They just…decided…Mercury doesn’t have to follow that rule.

    It was all done very unscientifically.

    Edit: I want to add that now there are only 8 planets…in the universe. There are no other planets because the definition includes that they must “orbit the Sun”. Not a star but very specifically the Sun. All this with exceptions for just 8 objects? I’m telling you it was a power trip thing more than a scientific endeavor.


  • nexguy@lemmy.worldtoScience Memes@mander.xyzSad Ganymede noises
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    5 months ago

    It’s a fine metaphor but it doesn’t work for scientific definitions which are exact. The IAU came up with the rule then had to make an exception to their own brand new rule in order to have Neptune remain a planet but not pluto even though both fail the rule. The exception is real and written down, not assumed.

    Yet again another of the IAU rules is the body has to be assume hydrostatic equilibrium (nearly round). Mercury is NOT in hydrostatic equilibrium and they knew this. So they just…decided… that Mercury is a planet anyway and does not have to follow that rule.

    So two planets don’t even follow the rules they made yet were unscientifically decided to be planets. Why? What was the point of it? Certainly wasn’t done for any scientific reason.