{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.frozen-star","code":"thing-q5506321","url":"https://ver.cy/models/thing/q5506321/","name":"frozen star","alternateNames":[],"kind":"thing","status":"published","version":"0.2.0-wave.2","language":"en","classifiers":{"family":"Thing Registry","category":"Physical world and living systems","entryKind":"thing","plane":"PHY","domain":["PHY.SPC"],"industry":[],"navPath":"","tags":[],"facets":{}},"whatItIs":"A frozen star is a hypothetical far-future star whose formation would be enabled by increased metallicity, meaning a higher abundance of elements heavier than helium, allowing sustained hydrogen fusion at masses below the present stellar fusion threshold and unusually low surface temperatures.","purpose":"Let an agent explain the far-future frozen-star hypothesis, its theoretical basis and its unobserved status with attribution.","scope":{"in":[],"out":[],"boundaries":[]},"distinguishingFeatures":["The concept describes a hypothetical far-future star.","Increased metallicity is central to the proposed lower mass threshold for sustained hydrogen fusion.","The hypothesis predicts unusually low stellar surface temperatures.","No stars of this proposed kind have been observed."],"structure":{"bundles":[{"id":"future","name":"Future","description":"Far-future stars.","layers":[{"id":"idea","name":"Idea","description":"The hypothesis.","findings":[{"id":"idea-finding","name":"Idea","description":"Hypothesis.","questions":[{"text":"What is the far-future frozen star hypothesis, and who proposed it?","kind":"provenance"},{"text":"Why would lower-mass objects be able to fuse in a colder universe?","kind":"definition"}]}]},{"id":"timescale","name":"Timescale","description":"When.","findings":[{"id":"timescale-finding","name":"Timescale","description":"Timescale.","questions":[{"text":"On what timescale would such stars form, according to the proposal?","kind":"measurement"},{"text":"How does it relate to the degenerate era of the universe?","kind":"provenance"}]}]}]},{"id":"historical","name":"Historical","description":"Frozen stars and black holes.","layers":[{"id":"term","name":"Term","description":"The old term.","findings":[{"id":"term-finding","name":"Term","description":"Term.","questions":[{"text":"Why were collapsed objects called frozen stars in Soviet-era physics, and how did the term black hole replace it?","kind":"provenance"},{"text":"What does time dilation at the horizon imply for distant observers?","kind":"definition"}]}]},{"id":"physics","name":"Physics","description":"Collapse and observers.","findings":[{"id":"physics-finding","name":"Physics","description":"Physics.","questions":[{"text":"How do infalling and distant observers see gravitational collapse differently?","kind":"definition"},{"text":"Which entry fits black holes?","kind":"action"}]}]}]},{"id":"status","name":"Status","description":"Hypothetical.","layers":[{"id":"caveats","name":"Caveats","description":"Caveats.","findings":[{"id":"caveats-finding","name":"Caveats","description":"Caveats.","questions":[{"text":"Is each sense presented as theoretical with proponents named?","kind":"boundary"},{"text":"How is it assessed by the community?","kind":"provenance"}]}]},{"id":"senses","name":"Senses","description":"Which sense.","findings":[{"id":"senses-finding","name":"Senses","description":"Which sense.","questions":[{"text":"Which sense of frozen star is meant in this context?","kind":"boundary"},{"text":"Is a fictional frozen star meant?","kind":"boundary"}]}]}]},{"id":"learn","name":"Learn","description":"Explaining.","layers":[{"id":"explain","name":"Explain","description":"Plain language.","findings":[{"id":"explain-finding","name":"Explain","description":"Plain explanation.","questions":[{"text":"How can the frozen star ideas be explained simply while noting their status?","kind":"action"},{"text":"Which sources are reliable?","kind":"provenance"}]}]},{"id":"related","name":"Related","description":"Related objects.","findings":[{"id":"related-finding","name":"Related","description":"Related objects.","questions":[{"text":"How do frozen stars relate to brown dwarfs, white dwarfs and black holes?","kind":"definition"},{"text":"Which entry fits each?","kind":"action"}]}]}]}]},"agentConduct":{"may":["Explain the hypothetical far-future frozen star as an unobserved stellar proposal.","Describe the theoretical basis and time scales with sources."],"mustNot":["Present frozen stars as observed objects.","Treat the historical use of frozen star for black holes as part of this hypothetical-star model.","Invent figures for their properties that the literature does not give."],"requiresHuman":["Publishing the concept as fact in teaching material."]},"ethics":{"considerations":["Speculative astrophysics is easily misreported as discovery.","Learners depend on clear labels between theory and observation."],"affectedParties":["Students and learners","Readers of popular science"]},"owners":{"steward":"Nobody: a theoretical concept held by the scientific community.","roles":[],"masterSystems":[]},"relations":[{"target":"Q5961276","type":"parent","note":"registry parent class"},{"target":"hypothetical star","type":"related","note":"category"},{"target":"dark star","type":"related","note":"other hypothetical star"},{"target":"black star","type":"related","note":"black hole alternatives"},{"target":"Reissner-Nordstrom black hole","type":"related","note":"black hole theory"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.frozen-star","Wikidata: Q5506321 (https://www.wikidata.org/wiki/Q5506321)"]},"properties":{"applicability":"required","items":["Stellar mass:  kilograms - For the hypothetical far-future stellar sense, mass is a theoretical model parameter rather than a measured property of an observed example.","Effective surface temperature:  kelvin - For the hypothetical far-future stellar sense, temperature is predicted from the model's luminosity and radius rather than measured from an observed spectrum.","Radiated luminosity:  watts - For the hypothetical far-future stellar sense, luminosity is calculated from a specified stellar evolution model and its assumed environment."]},"recognition":{"applicability":"required","items":["No observed appearance establishes the identity of a hypothetical frozen star.","Illustrations of these far-future low-mass stars are speculative representations.","Brown dwarfs are observed substellar objects and do not establish observation of the proposed frozen stars.","Not observed; theoretical constructs."]},"capabilities":{"applicability":"required","items":["explain the far-future frozen star hypothesis","explain the historical frozen star term for black holes","separate the senses","clarify hypothetical status"]},"hazards":{"applicability":"required","items":["Conflating the senses","Presenting hypotheses as established"]},"interfaces":{"applicability":"required","items":["No regulation"]},"context":{"applicability":"required","items":["Theoretical astrophysics and history of physics.","far-future frozen stars","frozen star as historical term for black holes","related low-mass and degenerate objects"]}},"sources":[{"title":"Wikidata item Q5506321: frozen star","url":"https://www.wikidata.org/wiki/Q5506321","note":"identity and sense of the item"},{"title":"Wikipedia: Frozen star","url":"https://en.wikipedia.org/wiki/Frozen_star","note":"general description of the item"}],"openQuestions":["Should the two senses be separate entries?","How should papers be linked?","How should far-future cosmology be linked?"],"resources":{"spec":"/models/things/publications/thing-q5506321/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q5506321/spec.json"],"providers":["Claude"],"researchStatus":"unreviewed","generatedAt":"2026-09-11T20:51:21Z","builder":"tools/build_cards.py@1.0.0"},"completeness":{"sections":{"classifiers":"filled","whatItIs":"filled","purpose":"filled","distinguishingFeatures":"filled","structure":"filled","agentConduct":"filled","ethics":"filled","owners":"filled","relations":"filled","interaction.identity":"filled","interaction.properties":"filled","interaction.recognition":"filled","interaction.capabilities":"filled","interaction.hazards":"filled","interaction.interfaces":"filled","interaction.context":"filled","sources":"filled"},"notes":{"_gate":"Published through the thing publication gate 1.0 on 2026-10-07T12:16:33+00:00: completeness 1.00; sense: Wikidata description; 2 live sources; review by codex: pass"},"score":1.0}}