{
  "export": {
    "source": "https://urth.darkrealm.vip/thread/urth/2513",
    "note": "Exported from an unofficial mirror of a public mailing list. Copyright in each message remains with the person who wrote it.  Email addresses are obscured as `user at host`, the form the original archive published. This file was rebuilt from parsed fields rather than retained headers, so it is faithful in content but not byte-exact.",
    "addresses": "obscured as 'user at host'"
  },
  "archive": "urth",
  "thread": {
    "id": 2513,
    "subject": "Come to Think of It ...Pack Two Sweaters",
    "messages": 1,
    "voices": 1,
    "first": "2000-12-16T10:32:58+00:00",
    "last": "2000-12-16T10:32:58+00:00"
  },
  "messages": [
    {
      "message_id": "<urth-v0030-0205@digest.urth.net>",
      "from": {
        "name": "Talarican",
        "address": "exultnttalarican at mindspring.com"
      },
      "date": "2000-12-16T10:32:58+00:00",
      "subject": "(urth) Come to Think of It ...Pack Two Sweaters",
      "in_reply_to": null,
      "reply_link": null,
      "blocks": [
        {
          "kind": "text",
          "depth": 0,
          "text": "I stand clarified now, 402 Annese days was the length of year for St.\nAnne/St.Croix given in the text, and Mantis' analysis aimed to deduce the\nlength of the Annese day.\n\nAll I can say is, either there is something very peculiar going on with St.\nAnne/St. Croix' sun, as with our Old Sun, allowing it to be high mass and\nlarge (therefore more luminous), but low temperature, a beast which sits\nabove the main sequence on the Hertzsprung-Russell diagram.\n\nI considered the possibility of coarse \"reddening\" dust in the sun's\necliptic plane, but that again should attenuate the energy reaching the twin\nplanets, effectively reducing the radius of the habitable zone.\n\nIt seems there is a class or subclass of star called \"subgiant\", such as\nRana, a K type star which is 2.8 times as luminous as Sol, with 2.7 times\nSol's diameter but only about 0.79 solar mass. Rana's present habitable zone\nis estimated to lie at radius 1.7 a.u. It may be that some such star\ncould have the magic combination of properties for St. Croix/St. Anne's sun,\nbut such a star is shortlived and prone to pulsation. The flora and fauna\nwhich occurs on St. Croix and St. Anne almost certainly would have to have\nbeen \"imported\" from elsewhere after the star expanded enough to warm the\npreviously frozen twin planets. Could that be the key to this paradox?\n\nThe Mad, Puzzled Exultant"
        }
      ]
    }
  ]
}