"horizon problem" meaning in English

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  "lang_code": "en",
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      "glosses": [
        "The cosmological fine-tuning problem of explaining the observed homogeneity of causally disconnected regions of space in the absence of a mechanism that sets the same initial conditions everywhere."
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      "id": "en-horizon_problem-en-name-UoR6dLdr",
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      "raw_glosses": [
        "(cosmology) The cosmological fine-tuning problem of explaining the observed homogeneity of causally disconnected regions of space in the absence of a mechanism that sets the same initial conditions everywhere."
      ],
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        "astronomy",
        "cosmology",
        "natural-sciences"
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      "translations": [
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "Translations",
          "word": "horisonttiongelma"
        },
        {
          "code": "de",
          "lang": "German",
          "sense": "Translations",
          "tags": [
            "neuter"
          ],
          "word": "Horizontproblem"
        },
        {
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            "masculine"
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          "word": "problem horyzontu"
        }
      ]
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  "word": "horizon problem"
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        "(cosmology) The cosmological fine-tuning problem of explaining the observed homogeneity of causally disconnected regions of space in the absence of a mechanism that sets the same initial conditions everywhere."
      ],
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        "astronomy",
        "cosmology",
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      "word": "horisonttiongelma"
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    {
      "code": "de",
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      "sense": "Translations",
      "tags": [
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      "word": "Horizontproblem"
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      "word": "problem horyzontu"
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  ],
  "word": "horizon problem"
}