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    "story_id": "mp-2026-07-17-014",
    "source_story_id": "tmp-story-psyche-gamma-sensor-mars-rehearsal",
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    "headline": "Psyche's Gamma Sensor Rehearses on Mars",
    "slug": "psyche-s-gamma-sensor-rehearses-on-mars",
    "dek": "The LLNL-built detector kept its resolution after 2.6 years in deep space and exercised its pipeline during a gravity assist.",
    "summary": "The LLNL-built detector kept its resolution after 2.6 years in deep space and exercised its pipeline during a gravity assist.",
    "body_text": "The sensor collected data as Psyche passed within 2,864 miles of Mars at over 12,000 miles per hour. The encounter tested sensitivity, radiation effects, repair operations, cosmic-ray monitoring, and processing rather than mapping Mars. The instrument maintained expected resolution; asteroid arrival is due in 2029.",
    "why_it_matters": "The LLNL-built detector kept its resolution after 2.6 years in deep space and exercised its pipeline during a gravity assist.",
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    "importance": 8,
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    "first_published_at": "2026-07-17T09:00:00.000-04:00",
    "modified_at": "2026-07-17T14:34:04.943-04:00",
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    "tags": [
      "Psyche",
      "spectroscopy",
      "Mars"
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    {
      "source_id": "source-2026-07-17-014",
      "title": "LLNL via Newswise: Psyche gamma sensor",
      "publisher": "LLNL via Newswise",
      "url": "https://www.newswise.com/articles/nasa-s-psyche-mission-tests-llnl-built-gamma-ray-sensor-on-mars-flyby",
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      "published_at": "2026-07-17T10:00:00.000-04:00",
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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": "Psyche's Gamma Sensor Rehearses on Mars",
    "publisher": "The Machine Press",
    "published_at": "2026-07-17T09:00:00.000-04:00",
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