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    "story_id": "mp-2026-07-16-004",
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    "headline": "Webb Finds a Planet by Reading Its Atmosphere",
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    "dek": "Beta Pictoris d emerged from carbon-monoxide absorption lines inside a bright debris disk where ordinary imaging had struggled.",
    "summary": "Beta Pictoris d emerged from carbon-monoxide absorption lines inside a bright debris disk where ordinary imaging had struggled.",
    "body_text": "NASA's James Webb Space Telescope found a third giant planet in the Beta Pictoris system by identifying the chemical fingerprint of its atmosphere. NIRSpec data showed carbon-monoxide absorption lines where researchers expected smooth scattered light from dust; the signal's motion and alignment matched an orbiting world, and later MIRI observations detected water vapor and methane. The planet is estimated to be at least twice Jupiter's mass and to orbit about 30 astronomical units from its star. It is the first directly imaged planet discovered primarily through moderate-resolution spectroscopy, demonstrating a way to find worlds hidden in bright, dusty environments.",
    "why_it_matters": "Beta Pictoris d emerged from carbon-monoxide absorption lines inside a bright debris disk where ordinary imaging had struggled.",
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    "tags": [
      "James Webb Space Telescope",
      "Beta Pictoris",
      "exoplanets",
      "spectroscopy"
    ],
    "image_url": null,
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      "source_id": "source-2026-07-16-004",
      "title": "NASA Science: Webb discovers hidden planet in famous star system",
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      "published_at": "2026-07-15T08:10:00.000-04:00",
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    "title": "Webb Finds a Planet by Reading Its Atmosphere",
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