"super cluster" meaning in English

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    {
      "form": "super clusters",
      "tags": [
        "plural"
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    }
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  "head_templates": [
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      "expansion": "super cluster (plural super clusters)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "supercluster"
        }
      ],
      "categories": [
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          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
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          "source": "w"
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          "source": "w"
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        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Astronomy",
          "orig": "en:Astronomy",
          "parents": [
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            "Space",
            "All topics",
            "Nature",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Alternative form of supercluster"
      ],
      "id": "en-super_cluster-en-noun-XmJAxiuB",
      "links": [
        [
          "astronomy",
          "astronomy"
        ],
        [
          "supercluster",
          "supercluster#English"
        ]
      ],
      "raw_glosses": [
        "(astronomy) Alternative form of supercluster"
      ],
      "tags": [
        "alt-of",
        "alternative"
      ],
      "topics": [
        "astronomy",
        "natural-sciences"
      ]
    }
  ],
  "word": "super cluster"
}

{
  "forms": [
    {
      "form": "super clusters",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "super cluster (plural super clusters)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "supercluster"
        }
      ],
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
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        "en:Astronomy"
      ],
      "glosses": [
        "Alternative form of supercluster"
      ],
      "links": [
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        ],
        [
          "supercluster",
          "supercluster#English"
        ]
      ],
      "raw_glosses": [
        "(astronomy) Alternative form of supercluster"
      ],
      "tags": [
        "alt-of",
        "alternative"
      ],
      "topics": [
        "astronomy",
        "natural-sciences"
      ]
    }
  ],
  "word": "super cluster"
}