"final parsec problem" meaning in English

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  "lang_code": "en",
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          "name": "Astronomy",
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          "name": "Black holes",
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      "glosses": [
        "The problem of whether two supermassive black holes in a merged galaxy would remain in orbit or eventually merge, and if so, how."
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          "astronomy",
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        [
          "supermassive black hole",
          "supermassive black hole"
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          "galaxy",
          "galaxy"
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      "raw_glosses": [
        "(astronomy) The problem of whether two supermassive black holes in a merged galaxy would remain in orbit or eventually merge, and if so, how."
      ],
      "synonyms": [
        {
          "word": "last parsec problem"
        },
        {
          "word": "final-parsec problem"
        }
      ],
      "topics": [
        "astronomy",
        "natural-sciences"
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  "word": "final parsec problem"
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        "The problem of whether two supermassive black holes in a merged galaxy would remain in orbit or eventually merge, and if so, how."
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          "astronomy",
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          "supermassive black hole",
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        "(astronomy) The problem of whether two supermassive black holes in a merged galaxy would remain in orbit or eventually merge, and if so, how."
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        "astronomy",
        "natural-sciences"
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  "synonyms": [
    {
      "word": "last parsec problem"
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    {
      "word": "final-parsec problem"
    }
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  "word": "final parsec problem"
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