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    "headline": "A Diffusion Model Drew Dark Matter Across 90 Megaparsecs",
    "slug": "a-diffusion-model-drew-dark-matter-across-90-megaparsecs",
    "dek": "The released SDSS projection reconstructs clusters, filaments and voids from stellar-mass density.",
    "summary": "The released SDSS projection reconstructs clusters, filaments and voids from stellar-mass density.",
    "body_text": "A model trained on CAMELS and checked against independent IllustrisTNG data reconstructed a 90-by-90 inverse-h-megaparsec field from SDSS galaxies. Aperture masses agree statistically with group catalogs, but the map remains a simulation-trained inference, not direct dark-matter imaging.",
    "why_it_matters": "The released SDSS projection reconstructs clusters, filaments and voids from stellar-mass density.",
    "limitations": [
      "Aperture masses agree statistically with group catalogs, but the map remains a simulation-trained inference, not direct dark-matter imaging."
    ],
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        "text": "The released SDSS projection reconstructs clusters, filaments and voids from stellar-mass density.",
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        "qualification": "Aperture masses agree statistically with group catalogs, but the map remains a simulation-trained inference, not direct dark-matter imaging."
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    "tags": [
      "dark matter",
      "SDSS",
      "diffusion models"
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  "sources": [
    {
      "source_id": "source-2026-09-20-020",
      "title": "arXiv preprint 2609.19295",
      "publisher": "arXiv",
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      "published_at": "2026-09-16T14:04:18.000-04:00",
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    "title": "A Diffusion Model Drew Dark Matter Across 90 Megaparsecs",
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