• dbtng@eviltoast.org
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    1 day ago

    The impression I got was that this is a long straight thing that is spinning. “14 nearby galaxies rich in hydrogen gas, arranged in a thin, stretched-out line about 5.5 million light-years long and 117,000 light-years wide.”

    You don’t have to think about that very long to see something strange. A line spinning around a common point must go slower in the middle and faster on the ends, just to keep up and even be a line of things.

    If the whole line maintains a uniform speed, the middle will complete a rotation much faster than the edges, and what was a line shortly becomes a spiral.

    Or, that’s the way shit is supposed to work. Unless you’re a galaxy. And in that case, people make shit up to explain your non-Netwonian dynamics. There isn’t enough info in the article to understand if they are implying a vast halo of dark matter to support this rotating structure. Christ. Something that big, spinning, with lobes, would send out gravity waves. The whole set of ideas here is just a fraught mess.

    • Thorry@feddit.org
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      2 days ago

      All motion is relative, so by definition that is not possible.

      I think what they are trying to say because it’s spinning the same it’s all connected or formed at the same time.

      • mech@feddit.org
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        2 days ago

        All motion is relative, so it’s valid to define that the center of the universe, around which everything else revolves, is my cat.
        (by her definition)

      • tomiant@piefed.social
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        2 days ago

        That’s what I’m saying.

        A dog biting a spinning man? That’s not news.

        A spinning dog biting a man? That’s kind of weird, but still not news.

        The Universe spinning around a stationary dog? Now that is front page material.