"Local Bubble" meaning in English

{
  "forms": [
    {
      "form": "the Local Bubble",
      "tags": [
        "canonical"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "def": "1",
        "head": "Local Bubble"
      },
      "expansion": "the Local Bubble",
      "name": "en-proper noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "name",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
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        },
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        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Astronomy",
          "orig": "en:Astronomy",
          "parents": [
            "Sciences",
            "Space",
            "All topics",
            "Nature",
            "Fundamental"
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        }
      ],
      "glosses": [
        "A cavity in the interstellar medium of the Orion Arm of the Milky Way estimated to be around 1,000 light years in diameter, with the Solar System sitting close to its centre; likely to be the result of a supernova which exploded in the last ten to twenty million years."
      ],
      "id": "en-Local_Bubble-en-name-FZl6aDmU",
      "links": [
        [
          "astronomy",
          "astronomy"
        ],
        [
          "cavity",
          "cavity"
        ],
        [
          "interstellar medium",
          "interstellar medium"
        ],
        [
          "Orion Arm",
          "Orion Arm"
        ],
        [
          "Milky Way",
          "Milky Way"
        ],
        [
          "light year",
          "light year"
        ],
        [
          "diameter",
          "diameter"
        ],
        [
          "Solar System",
          "Solar System"
        ],
        [
          "centre",
          "centre"
        ],
        [
          "supernova",
          "supernova"
        ]
      ],
      "raw_glosses": [
        "(astronomy) A cavity in the interstellar medium of the Orion Arm of the Milky Way estimated to be around 1,000 light years in diameter, with the Solar System sitting close to its centre; likely to be the result of a supernova which exploded in the last ten to twenty million years."
      ],
      "related": [
        {
          "word": "Local Fluff"
        }
      ],
      "topics": [
        "astronomy",
        "natural-sciences"
      ],
      "translations": [
        {
          "code": "cmn",
          "lang": "Chinese Mandarin",
          "roman": "Běndìpào",
          "sense": "Translations",
          "word": "本地泡"
        },
        {
          "code": "cmn",
          "lang": "Chinese Mandarin",
          "roman": "Běndìqiāng",
          "sense": "Translations",
          "word": "本地腔"
        },
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "Translations",
          "word": "Paikallinen kuuma kupla"
        },
        {
          "code": "ru",
          "lang": "Russian",
          "roman": "Méstnyj puzýrʹ",
          "sense": "Translations",
          "tags": [
            "masculine"
          ],
          "word": "Ме́стный пузы́рь"
        }
      ]
    }
  ],
  "word": "Local Bubble"
}

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    {
      "form": "the Local Bubble",
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    }
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  "head_templates": [
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  "lang": "English",
  "lang_code": "en",
  "pos": "name",
  "related": [
    {
      "word": "Local Fluff"
    }
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        "A cavity in the interstellar medium of the Orion Arm of the Milky Way estimated to be around 1,000 light years in diameter, with the Solar System sitting close to its centre; likely to be the result of a supernova which exploded in the last ten to twenty million years."
      ],
      "links": [
        [
          "astronomy",
          "astronomy"
        ],
        [
          "cavity",
          "cavity"
        ],
        [
          "interstellar medium",
          "interstellar medium"
        ],
        [
          "Orion Arm",
          "Orion Arm"
        ],
        [
          "Milky Way",
          "Milky Way"
        ],
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          "light year",
          "light year"
        ],
        [
          "diameter",
          "diameter"
        ],
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          "Solar System",
          "Solar System"
        ],
        [
          "centre",
          "centre"
        ],
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          "supernova",
          "supernova"
        ]
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      "raw_glosses": [
        "(astronomy) A cavity in the interstellar medium of the Orion Arm of the Milky Way estimated to be around 1,000 light years in diameter, with the Solar System sitting close to its centre; likely to be the result of a supernova which exploded in the last ten to twenty million years."
      ],
      "topics": [
        "astronomy",
        "natural-sciences"
      ]
    }
  ],
  "translations": [
    {
      "code": "cmn",
      "lang": "Chinese Mandarin",
      "roman": "Běndìpào",
      "sense": "Translations",
      "word": "本地泡"
    },
    {
      "code": "cmn",
      "lang": "Chinese Mandarin",
      "roman": "Běndìqiāng",
      "sense": "Translations",
      "word": "本地腔"
    },
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "Translations",
      "word": "Paikallinen kuuma kupla"
    },
    {
      "code": "ru",
      "lang": "Russian",
      "roman": "Méstnyj puzýrʹ",
      "sense": "Translations",
      "tags": [
        "masculine"
      ],
      "word": "Ме́стный пузы́рь"
    }
  ],
  "word": "Local Bubble"
}