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    "story_id": "mp-2026-11-10-027",
    "source_story_id": "tmp-story-spaceborne-radar-debris",
    "edition_id": "mp-2026-11-10-morning-0123",
    "edition_url": "https://themachinepress.com/edition/2026-11-10",
    "position": 16,
    "story_type": "dispatch",
    "section": "infrastructure",
    "editorial_classification": "editorial",
    "headline": "Earth Radar Finds What Is Beside the Satellite",
    "slug": "earth-radar-finds-what-is-beside-the-satellite",
    "dek": "Open Sentinel-1 voltage data revealed 76 nearby objects and recovered two debris transits without orbital predictions.",
    "summary": "Open Sentinel-1 voltage data revealed 76 nearby objects and recovered two debris transits without orbital predictions.",
    "body_text": "Radar echo power falls with the fourth power of distance, making a nearby object dramatically brighter to a spaceborne sensor than to a distant ground radar. Using Sentinel-1 recordings from six days, catalogue-assisted processing produced a manually checked set of 76 satellites, rocket bodies and debris fragments at ranges from 41.7 to 492.9 kilometers. A blind search recovered two selected debris transits, and one short encounter improved a catalogue orbit using range and Doppler. Ground scatter remains the dominant limit for Earth-looking observations. Idealized calculations suggest millimeter-scale sensitivity at ten kilometers, but those figures assume receiver-noise conditions and coherent integration; the demonstrated sample establishes feasibility, not a complete debris census.",
    "why_it_matters": "Open Sentinel-1 voltage data revealed 76 nearby objects and recovered two debris transits without orbital predictions.",
    "limitations": [
      "Idealized calculations suggest millimeter-scale sensitivity at ten kilometers, but those figures assume receiver-noise conditions and coherent integration; the demonstrated sample establishes feasibility, not a complete debris census."
    ],
    "importance": 9,
    "canonical_url": "https://themachinepress.com/story/mp-2026-11-10-027/earth-radar-finds-what-is-beside-the-satellite",
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    "first_published_at": "2026-11-10T09:00:00.000-05:00",
    "modified_at": "2026-11-10T09:00:00.000-05:00",
    "content_status": "new",
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        "text": "Open Sentinel-1 voltage data revealed 76 nearby objects and recovered two debris transits without orbital predictions.",
        "source_ids": [
          "source-2026-11-10-016"
        ],
        "qualification": "Idealized calculations suggest millimeter-scale sensitivity at ten kilometers, but those figures assume receiver-noise conditions and coherent integration; the demonstrated sample establishes feasibility, not a complete debris census."
      }
    ],
    "source_ids": [
      "source-2026-11-10-016"
    ],
    "tags": [
      "orbital debris",
      "space radar",
      "Sentinel-1"
    ],
    "image_url": null,
    "corrections": []
  },
  "sources": [
    {
      "source_id": "source-2026-11-10-016",
      "title": "arXiv preprint 2611.12158, original v1",
      "publisher": "arXiv",
      "url": "https://arxiv.org/abs/2611.12158v1",
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      "source_type": "primary_research",
      "is_primary_source": true,
      "published_at": null,
      "accessed_at": "2026-11-10T08:22:17.036-05:00",
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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": "Earth Radar Finds What Is Beside the Satellite",
    "publisher": "The Machine Press",
    "published_at": "2026-11-10T09:00:00.000-05:00",
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