"dark flow" meaning in English

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  "etymology_text": "dark (“hidden”) + flow From the motion of galaxy clusters due to a hidden influence, possibly from beyond the horizon of the observable universe.",
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        "A possible non-random component of the peculiar velocity of galaxy clusters."
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        "(astrophysics) A possible non-random component of the peculiar velocity of galaxy clusters."
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          "word": "Hubble flow"
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        "dark flow"
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  "etymology_text": "dark (“hidden”) + flow From the motion of galaxy clusters due to a hidden influence, possibly from beyond the horizon of the observable universe.",
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    {
      "form": "dark flows",
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        "plural"
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