{
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    "economic_signal_ids": [],
    "relation": "topic-surface-only",
    "scan_signal_ids": []
  },
  "dek": "中新网北京9月1日电 (记者 孙自法)作为广袤宇宙中迄今所知唯一存在生命的星球，地球诞生约45亿年以来，宇宙发生了怎样的变化？恒星形成活动为什么衰减？备受关注。",
  "desk": "rights",
  "event_id": "event-15e47955a149b3bbe9766623",
  "evidence_groups": [
    {
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        "media"
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        "china-news-service-politics"
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  "evidence_refs": [
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      "independence_group": "china-news-service-state-media",
      "item_id": "item-42b36f4a55a3453155c5e4da",
      "published_at": "2026-09-01T10:14:54Z",
      "role": "media",
      "source_id": "china-news-service-politics",
      "source_name": "China News Service",
      "title": "恒星形成为何衰减？“中国天眼”联合“国际暗眼”高精度测量宇宙演化",
      "url": "https://www.chinanews.com.cn/gn/2026/09-01/10688046.shtml",
      "version_id": "itemv-e18025b12b6cefd1477bd7f8"
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  "evidence_strength": "single-source",
  "headline": "恒星形成为何衰减？“中国天眼”联合“国际暗眼”高精度测量宇宙演化",
  "lead": false,
  "lead_reason": "Current single-source metadata is retained but not promoted as a lead.",
  "limitations": [
    "Palimpsest retained only feed title, canonical link, time, and a bounded plain-text excerpt; it did not fetch the article body.",
    "The evidence-strength label describes source structure, not truth, intent, impact, or causation.",
    "Declared instrument links are topical pointers until a separate scan or economic observation is joined by time and method.",
    "Title-similarity clustering can miss differently worded or cross-language accounts and can join closely worded updates.",
    "This dossier currently contains one independent evidence group and remains explicitly attributed."
  ],
  "mutation": {
    "kind": "unchanged",
    "previous_version_id": "eventv-b5a1fc8fa3f1d70eafe3f8c8"
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  "published_at": "2026-09-01T10:14:54Z",
  "reported_facts": [
    {
      "attribution": "China News Service",
      "evidence_item_id": "item-42b36f4a55a3453155c5e4da",
      "published_at": "2026-09-01T10:14:54Z",
      "statement": "China News Service published “恒星形成为何衰减？“中国天眼”联合“国际暗眼”高精度测量宇宙演化”."
    }
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  "updated_at": "2026-09-01T10:14:54Z",
  "url": "https://palimpsest.info/news/wire/event-15e47955a149b3bbe9766623/",
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}