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    "headline": "A Neutron Star Collision Builds a Star Within a Star",
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    "dek": "A three-dimensional impact simulation followed by stellar evolution produced a bound Thorne-Żytkow object and a possible chemical signature.",
    "summary": "A three-dimensional impact simulation followed by stellar evolution produced a bound Thorne-Żytkow object and a possible chemical signature.",
    "body_text": "The simulated neutron star settles inside a ten-solar-mass stellar envelope. Collision heating triggers broad nuclear burning before convection carries carbon-nitrogen-cycle material to the surface. The work connects formation and long-term evolution in simulation; it does not report an observed Thorne-Żytkow object.",
    "why_it_matters": "A three-dimensional impact simulation followed by stellar evolution produced a bound Thorne-Żytkow object and a possible chemical signature.",
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    "tags": [
      "astrophysics",
      "neutron stars",
      "stellar evolution"
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      "source_id": "source-2026-10-22-018",
      "title": "arXiv preprint 2610.29833, original v1",
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    "title": "A Neutron Star Collision Builds a Star Within a Star",
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