"Kessler syndrome" meaning in English

{
  "etymology_text": "Proposed by NASA scientist Donald J. Kessler in 1978.",
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  "lang_code": "en",
  "pos": "noun",
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      "glosses": [
        "A theoretical scenario in which the density of objects in low Earth orbit due to space pollution is high enough that collisions between objects could cause a cascade in which each collision generates debris that increases the likelihood of further collisions."
      ],
      "id": "en-Kessler_syndrome-en-noun-Hjf9A4AB",
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          "theoretical",
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          "density",
          "density"
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          "object",
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          "low Earth orbit",
          "low Earth orbit"
        ],
        [
          "space",
          "space"
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          "pollution",
          "pollution"
        ],
        [
          "collision",
          "collision"
        ],
        [
          "cascade",
          "cascade"
        ],
        [
          "debris",
          "debris"
        ]
      ],
      "tags": [
        "uncountable"
      ],
      "wikipedia": [
        "Kessler syndrome"
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  "word": "Kessler syndrome"
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  "lang_code": "en",
  "pos": "noun",
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        "A theoretical scenario in which the density of objects in low Earth orbit due to space pollution is high enough that collisions between objects could cause a cascade in which each collision generates debris that increases the likelihood of further collisions."
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          "space",
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          "pollution",
          "pollution"
        ],
        [
          "collision",
          "collision"
        ],
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          "cascade",
          "cascade"
        ],
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          "debris",
          "debris"
        ]
      ],
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        "Kessler syndrome"
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  "word": "Kessler syndrome"
}