"Kuiper cliff" meaning in English

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      "glosses": [
        "The 1:2 resonance, beyond which few objects are known; it may be the outer edge of the classical Kuiper belt or just the beginning of a broad gap."
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          "Kuiper belt",
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        "(astronomy) The 1:2 resonance, beyond which few objects are known; it may be the outer edge of the classical Kuiper belt or just the beginning of a broad gap."
      ],
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        "astronomy",
        "natural-sciences"
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        "Kuiper cliff"
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  "word": "Kuiper cliff"
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        "(astronomy) The 1:2 resonance, beyond which few objects are known; it may be the outer edge of the classical Kuiper belt or just the beginning of a broad gap."
      ],
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        "natural-sciences"
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