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    "story_id": "mp-2026-09-05-012",
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    "headline": "One Small Galaxy May Have Cleared Its Own Cosmic Bubble",
    "slug": "one-small-galaxy-may-have-cleared-its-own-cosmic-bubble",
    "dek": "JWST found the third confirmed Lyman-alpha emitter beyond redshift nine, without a surrounding galaxy overdensity to explain it.",
    "summary": "JWST found the third confirmed Lyman-alpha emitter beyond redshift nine, without a surrounding galaxy overdensity to explain it.",
    "body_text": "More than ten hours of NIRSpec observations place C3PO-8447 at redshift 8.99781 and detect Lyman-alpha emission escaping at 1.5 ± 0.3%. The galaxy is young, low-mass and metal-poor, with ultraviolet diagnostics pointing to a recent starburst rather than an active nucleus. The inferred ionized bubble spans roughly 0.07 to 0.20 physical megaparsecs, a size the authors say the galaxy can produce alone. They find no large-scale overdensity or major neighboring contribution, making the object a compact view of early reionization rather than proof that isolated galaxies dominated the era.",
    "why_it_matters": "JWST found the third confirmed Lyman-alpha emitter beyond redshift nine, without a surrounding galaxy overdensity to explain it.",
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    "importance": 9,
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    "first_published_at": "2026-09-05T09:00:00.000-04:00",
    "modified_at": "2026-09-05T09:00:00.000-04:00",
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        "text": "JWST found the third confirmed Lyman-alpha emitter beyond redshift nine, without a surrounding galaxy overdensity to explain it.",
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    "tags": [
      "JWST",
      "reionization",
      "early galaxies"
    ],
    "image_url": null,
    "corrections": []
  },
  "sources": [
    {
      "source_id": "source-2026-09-05-012",
      "title": "arXiv preprint 2609.03608",
      "publisher": "arXiv",
      "url": "https://arxiv.org/abs/2609.03608",
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      "source_type": "primary_research",
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      "published_at": "2026-09-03T05:55:42.000-04:00",
      "accessed_at": "2026-09-05T08:25:30.000-04:00",
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  "publisher": {
    "name": "The Machine Press",
    "url": "https://themachinepress.com",
    "description": "A daily newspaper for the age of artificial intelligence."
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  "cite_this_report": {
    "title": "One Small Galaxy May Have Cleared Its Own Cosmic Bubble",
    "publisher": "The Machine Press",
    "published_at": "2026-09-05T09:00:00.000-04:00",
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