• don@lemm.ee
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    1 year ago

    Calling an asteroid a stone, while technically true, is akin to calling the planet it struck a rock-covered ball bearing.

    • FilthyShrooms@lemmy.world
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      1 year ago

      A “rock-covered ball bearing” is much more accurate than what a lot if people call it. Better than a pebble in space

      • don@lemm.ee
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        1 year ago

        That I’ve met as many people as I have who assume it’s solid rock and that we can drill completely through it is… disconcerting.

    • Gormadt@lemmy.blahaj.zone
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      1 year ago

      I mean, the planet is likely smoother than a lot of ball bearings

      The highest point and the lowest point aren’t very far deviated. Less than 6 miles up and less than 6 miles down. Basically a little less than 0.001% deviation.

      • bufordt@sh.itjust.works
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        1 year ago

        New ball bearings are still likely significantly smoother than the earth. Old worn out ball bearings might be rougher.

        • Gormadt@lemmy.blahaj.zone
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          1 year ago

          After doing a bit of digging it looks like Earth would be comparable to a 1 inch grade 1000 ball bearing.

          mobile link, sorry

          God damn ball bearings get down to some crazy tolerances.

          I’m happy I dig some digging into it.

      • don@lemm.ee
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        1 year ago

        So you’re saying the earth is a very smooth ball bearing. This despite being classified as an oblate spheroid.

        • Deuces@lemmy.world
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          1 year ago

          I’m guessing smoothness doesn’t consider the non-spherical shape of the planet, just the bumpiness of it. But I’m also some random on the Internet, so who knows

          • don@lemm.ee
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            1 year ago

            I think I’m missing what the smoothness of the planet has to do with it being basically an iron-nickel ball covered by a bit of rock, but being a meat popsicle, I tend to miss a lot of things.

        • Gormadt@lemmy.blahaj.zone
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          1 year ago

          The difference in diameter between the pole and the equator is only about 26 miles.

          7926 miles vs 7900 miles

          So a difference of about 0.03%

          Yeah I’d say that’s pretty spherical

          Edit: Rereading this it comes of a bit rougher than I intended. Basically what I’m saying is something can be spherical without being a perfect sphere, infact if to be a sphere (in common usage of the word) only applied to perfect examples of a sphere than nothing would be a sphere. Definitions are pretty wishy-washy a lot of the times, especially when it comes to describing the world as it is.

          Earth is an oblique spheroid, technically. But calling it a sphere is true enough to observers that I’d say it still counts.