{
 "row": "avi-loeb-3i-atlas",
 "address": "avi loeb 3i atlas",
 "addresses": [
  "avi loeb 3i atlas"
 ],
 "extracted": "2026-11-06",
 "extractor": "Claude (Opus 5.5), subagent, 2026-11-06, one extractor (unaudited, §3.8)",
 "rule": "v0.10 §3.5, source-neutral: opening or abstract, defined terms, headline claims, stated limits, falsification conditions; quotes verbatim from the saved page texts (whitespace-normalised for the check; multi-part quotes joined by ' … ', each part checked), the Wikipedia wikitext with refs and link markup removed, the papers' pdftotext, or the card's title and snippet",
 "B_note": "The field B (§0.4, §3.1(a)), in two pools, kept apart by origin. B_D, the disclosed pool: 'card', the nine cards of T's rail (B1 Loeb's Medium essay of 2026-05-25, unreachable; B2 a FOX 32 Chicago clip, title only; B3 a YouTube video, title and snippet; B4 NewsNation, unreachable, the source the body names; B5 the July 2025 paper on a CfA surface, read from arXiv; B6 The Times of Israel, unreachable; B7 a Fox 32 Chicago video on Facebook, title only; B8 Jason Wright's AstroWright post; B9 a novel bearing the object's name, another sense). B_R, the reference pool: 'own_page', the Loeb Scale paper (B10), the essay of 2026-04-23 (B11) and the essay of 2025-11-08 (B12, unreachable); 'wikipedia', 'Avi Loeb' (B13) and '3I/ATLAS' (B14).",
 "lineage_note": "Lineages by sense; the field and the archive share them where an archive claim states the same sense. B5 v1, v2 and v3 are one work, one lineage (§3.6); its text is quoted from v2 (21 July 2025), whose sections are numbered (6. Discussion, 7. Conclusion); v1 numbers the conclusion 6, v3 leaves it unnumbered. See row.objects.P.rail for each lineage with its earliest source.",
 "pages": "saved files under datasets/negative-of-the-negative/v2/intake/avi-loeb-3i-atlas-20261102/ (Bn.html raw and Bn.txt text with scripts and styles stripped; B5-v1/v2/v3.pdf with .txt by pdftotext; B10.pdf and B10.txt as saved by the investigation; B11.txt the operator's copy; B13.wiki and B14.wiki the raw wikitext; tries/ the raw fetches and the refusals)",
 "counts": {
  "sources": 14,
  "B_D": 9,
  "B_R": 5,
  "fetched_or_saved": 6,
  "unreachable": 4,
  "title_or_snippet_only": 4,
  "claims": 76,
  "claims_B_D": 34,
  "claims_B_R": 42,
  "quotes_ok": 76
 },
 "field": [
  {
   "id": "B1",
   "card": "Medium — Did 3I/ATLAS Deliver Extrasolar Life to Our Backyard? - Avi Loeb",
   "fetched": "unreachable: the essay's URL could not be determined from the card (WebSearch: 'Avi Loeb \"Did 3I/ATLAS Deliver Extrasolar Life to Our Backyard?\" Medium'; 'avi-loeb.medium.com did-3i-atlas-deliver-extrasolar-life-to-our-backyard'; '\"Extrasolar Life to Our Backyard\" Loeb': no Medium URL returned); the",
   "origin": "card",
   "pool": "B_D"
  },
  {
   "id": "B2",
   "card": "YouTube·FOX 32 Chicago — Avi Loeb: Scientists find 'alien-like' water on 3I/ATLAS comet",
   "fetched": "video card: admitted through its title (the card has no snippet); the URL was not determined and no fetch was made (§3.1(a): video cards are admitted through title and snippet)",
   "origin": "card",
   "pool": "B_D"
  },
  {
   "id": "B3",
   "card": "YouTube — Avi Loeb: What Is 3I/ATLAS? - YouTube",
   "fetched": "video card: admitted through title and snippet; WebSearch '\"Avi Loeb: What Is 3I/ATLAS?\" YouTube' returned no YouTube URL; no fetch",
   "origin": "card",
   "pool": "B_D"
  },
  {
   "id": "B4",
   "card": "NewsNation — Harvard professor now agrees 3I/ATLAS 'most likely natural'",
   "fetched": "unreachable: the item's URL could not be determined (WebSearch: 'NewsNation \"Harvard professor now agrees 3I/ATLAS 'most likely natural'\"'; 'newsnationnow.com 3I/ATLAS most likely natural Harvard professor concedes Elizabeth Vargas'; 'site:newsnationnow.com 3I/ATLAS \"most likely natural\"': no newsna",
   "origin": "card",
   "pool": "B_D"
  },
  {
   "id": "B5",
   "card": "Center for Astrophysics | Harvard & Smithsonian — Is the Interstellar Object 3I/ATLAS Alien Technology?",
   "fetched": "card; B5-v2.pdf sha256 603c9504a7b96593, HTTP 200 at 2026-11-06T15:25:53Z",
   "origin": "card",
   "pool": "B_D"
  },
  {
   "id": "B6",
   "card": "The Times of Israel — Astronomer Avi Loeb warns world not to ignore new comet's potential alien threat | The Times of Israel",
   "fetched": "unreachable: the article's URL could not be determined (WebSearch: 'Times of Israel \"Astronomer Avi Loeb warns world not to ignore new comet's potential alien threat\"'; 'timesofisrael.com Avi Loeb Kim Kardashian 3I/ATLAS comet alien threat'; 'site:timesofisrael.com ...'; the snippet's first sentence",
   "origin": "card",
   "pool": "B_D"
  },
  {
   "id": "B7",
   "card": "Facebook·Fox 32 Chicago — Avi Loeb Explains C/2025 V1 & 3I/ATLAS \"Nearly Interstellar\" Mystery",
   "fetched": "video card: admitted through its title (the card has no snippet); no fetch",
   "origin": "card",
   "pool": "B_D"
  },
  {
   "id": "B8",
   "card": "Sites at Penn State — Loeb’s 3I/ATLAS “Anomalies” Explained | AstroWright",
   "fetched": "card; B8.html sha256 4534e8f96f53d0d9, HTTP 200 at 2026-11-06T15:26:04Z",
   "origin": "card",
   "pool": "B_D"
  },
  {
   "id": "B9",
   "card": "Google — 3I/Atlas: The Messenger of Orion - Book 1",
   "fetched": "card admitted through title and snippet; a novel, outside the entity; no fetch",
   "origin": "card",
   "pool": "B_D"
  },
  {
   "id": "B10",
   "card": "arXiv — The Loeb Scale: Astronomical Classification of Interstellar Objects (own page; B_R)",
   "fetched": "own page; B10.pdf sha256 1cbd3a8539394928, rebuild/3i-atlas-signal-search/sources/arxiv-2508.09167.pdf and .txt (sha256 of the pdf 1cbd3a853939492837470deb225c3615a3a6c89a6e5b8cb702bb1927c0ca3fe7), copie",
   "origin": "own_page",
   "pool": "B_R"
  },
  {
   "id": "B11",
   "card": "Medium — Avi Loeb, 'Where is 3I/ATLAS Now?', 2026-04-23 (own page; operator's saved copy; B_R)",
   "fetched": "own page; B11.txt sha256 45a6b77f11196a22, the operator's copy (sha256 45a6b77f11196a224a8eacf2ec689406fadb9a12f533d3379851c76f7b0bd807), copied unchanged; the host refuses this agent (Medium, HTTP 403 a",
   "origin": "own_page",
   "pool": "B_R"
  },
  {
   "id": "B12",
   "card": "Medium — Avi Loeb, essay of 2025-11-08 on the OH detection (own page; unreachable; B_R)",
   "fetched": "unreachable: the essay's URL could not be determined (WebSearch: 'Avi Loeb Medium November 8 2025 MeerKAT OH hydroxyl absorption 3I/ATLAS'; 'avi-loeb.medium.com radio detection 3I/ATLAS MeerKAT hydroxyl November 2025': no Medium URL); the host refuses the agent (HTTP 403, Cloudflare, at 2026-11-06T1",
   "origin": "own_page",
   "pool": "B_R"
  },
  {
   "id": "B13",
   "card": "Wikipedia — Avi Loeb (B_R)",
   "fetched": "wikipedia; B13.html sha256 6ec88ac30b64383e, HTTP 200 at 2026-11-06T15:26:14Z",
   "origin": "wikipedia",
   "pool": "B_R"
  },
  {
   "id": "B14",
   "card": "Wikipedia — 3I/ATLAS, 'Alien spacecraft speculation' (B_R)",
   "fetched": "wikipedia; B14.html sha256 01c62d0f33f4f237, HTTP 200 at 2026-11-06T15:26:14Z",
   "origin": "wikipedia",
   "pool": "B_R"
  }
 ],
 "field_by_origin": {
  "cards": [
   "B1",
   "B2",
   "B3",
   "B4",
   "B5",
   "B6",
   "B7",
   "B8",
   "B9"
  ],
  "own_pages": [
   "B10",
   "B11",
   "B12"
  ],
  "own_pages_note": "the entity's own pages: the person's own essays and papers. Card 1 (his Medium essay of 2026-05-25) and card 5 (the July 2025 paper, of which he is third author) are on T's rail and carried once, as cards, in B_D (B1, B5; B5 is also the brief's B_R source arXiv:2507.12213). The scale paper (B10), the essay of 2026-04-23 (B11, the operator's saved copy) and the essay of 2025-11-08 on the OH detection (B12, unreachable) are not on T's rail and stand in B_R.",
  "wikipedia": [
   "B13",
   "B14"
  ],
  "census_third_party": [],
  "unreachable": [
   "B1",
   "B4",
   "B6",
   "B12"
  ],
  "title_only": [
   "B2",
   "B3",
   "B7",
   "B9"
  ],
  "wikipedia_state": "two articles, read at their sections on him: 'Avi Loeb' (rendered HTTP 200 at 2026-11-06T15:26:14Z; raw wikitext HTTP 200; no redirect; last edited 14 October 2026), lead and the section '3I/ATLAS' under 'Claims about alien life'; '3I/ATLAS' (rendered HTTP 200 at 2026-11-06T15:26:14Z; raw wikitext HTTP 200; last edited 30 October 2026), the section 'Alien spacecraft speculation'. No card of T is a Wikipedia page; both stand in B_R.",
  "pools": {
   "B_D": [
    "B1",
    "B2",
    "B3",
    "B4",
    "B5",
    "B6",
    "B7",
    "B8",
    "B9"
   ],
   "B_R": [
    "B10",
    "B11",
    "B12",
    "B13",
    "B14"
   ],
   "note": "v0.10 §0.3, §3.1(a): B_D, every card on the rail (B1–B9); the body names one source, 'NewsNation', which is card 4 (B4), and embeds the video of card 2 (B2); 'Hubble and James Webb Space Telescopes' are instruments it composes, no source. B_R, the reference pool: the scale paper (B10), the essay of 2026-04-23 (B11), the essay of 2025-11-08 (B12, unreachable), Wikipedia 'Avi Loeb' (B13) and '3I/ATLAS' (B14). T against L_F(B_D) uses B1–B9 alone."
  },
  "sources": [
   {
    "id": "B1",
    "origin": "card",
    "pool": "B_D",
    "card_n": 1,
    "role": "Overview card 1, the entity's own surface (Loeb's Medium essay of 2026-05-25)",
    "url": null,
    "kind": "Overview card (Avi Loeb, Medium, 2026-05-25); an own page of the person who holds the position",
    "files": {},
    "fetched": {
     "result": "unreachable: the essay's URL could not be determined from the card (WebSearch: 'Avi Loeb \"Did 3I/ATLAS Deliver Extrasolar Life to Our Backyard?\" Medium'; 'avi-loeb.medium.com did-3i-atlas-deliver-extrasolar-life-to-our-backyard'; '\"Extrasolar Life to Our Backyard\" Loeb': no Medium URL returned); the host refuses the agent: https://avi-loeb.medium.com/ HTTP 403 (Cloudflare 'Just a moment...') at 2026-11-06T15:24:11Z and a Medium essay URL HTTP 403 at 2026-11-06T15:24:32Z (tries/medium-profile.html, tries/medium-test-fading.html); not retried by any other route. The card's title and snippet are its only text (§3.1(a))",
     "http": null
    },
    "names_operator": "yes (Avi Loeb, the author, in the snippet)",
    "names_archive": "no (none of the Crimson Hexagonal Archive, Alexanarch, Lee Sharks, Nobel Glas, Orin Trace, the Capture Registry in the saved text, card title or snippet)",
    "card": "Medium — Did 3I/ATLAS Deliver Extrasolar Life to Our Backyard? - Avi Loeb",
    "card_title": "Did 3I/ATLAS Deliver Extrasolar Life to Our Backyard? - Avi Loeb",
    "card_snippet": "Did 3I/ATLAS Deliver Extrasolar Life to Our Backyard? Avi Loeb May 25, 2026 -- 31 Press enter or click to view image in full size (Image credit: Julian Brooks/A...",
    "surfaced_by_T": [
     {
      "slug": "avi-loeb-3i-atlas-aio-20261102",
      "card": 1
     }
    ]
   },
   {
    "id": "B2",
    "origin": "card",
    "pool": "B_D",
    "card_n": 2,
    "role": "Overview card 2 (a video; the same clip is embedded in the body, 56s)",
    "url": null,
    "kind": "Overview card (YouTube, FOX 32 Chicago, 2m video)",
    "files": {},
    "fetched": {
     "result": "video card: admitted through its title (the card has no snippet); the URL was not determined and no fetch was made (§3.1(a): video cards are admitted through title and snippet)",
     "http": null
    },
    "names_operator": "yes (Avi Loeb in the title)",
    "names_archive": "no (none of the Crimson Hexagonal Archive, Alexanarch, Lee Sharks, Nobel Glas, Orin Trace, the Capture Registry in the saved text, card title or snippet)",
    "card": "YouTube·FOX 32 Chicago — Avi Loeb: Scientists find 'alien-like' water on 3I/ATLAS comet",
    "card_title": "Avi Loeb: Scientists find 'alien-like' water on 3I/ATLAS comet",
    "card_snippet": null,
    "surfaced_by_T": [
     {
      "slug": "avi-loeb-3i-atlas-aio-20261102",
      "card": 2
     }
    ]
   },
   {
    "id": "B3",
    "origin": "card",
    "pool": "B_D",
    "card_n": 3,
    "role": "Overview card 3 (a video)",
    "url": null,
    "kind": "Overview card (YouTube video, transcript snippet)",
    "files": {},
    "fetched": {
     "result": "video card: admitted through title and snippet; WebSearch '\"Avi Loeb: What Is 3I/ATLAS?\" YouTube' returned no YouTube URL; no fetch",
     "http": null
    },
    "names_operator": "yes (Avi Loeb in the title)",
    "names_archive": "no (none of the Crimson Hexagonal Archive, Alexanarch, Lee Sharks, Nobel Glas, Orin Trace, the Capture Registry in the saved text, card title or snippet)",
    "card": "YouTube — Avi Loeb: What Is 3I/ATLAS? - YouTube",
    "card_title": "Avi Loeb: What Is 3I/ATLAS? - YouTube",
    "card_snippet": "um three Atlas is an an object discovered on July 1st by the Atlas telescope in Chile half a meter in size it this object was very bright. and we still don't kn...",
    "surfaced_by_T": [
     {
      "slug": "avi-loeb-3i-atlas-aio-20261102",
      "card": 3
     }
    ]
   },
   {
    "id": "B4",
    "origin": "card",
    "pool": "B_D",
    "card_n": 4,
    "role": "Overview card 4, the source the body names ('to NewsNation') for its 'Shift to Natural Consensus'",
    "url": null,
    "kind": "Overview card (NewsNation, Elizabeth Vargas and Michael Ramsey, updated 2025-12-19); named in the body",
    "files": {},
    "fetched": {
     "result": "unreachable: the item's URL could not be determined (WebSearch: 'NewsNation \"Harvard professor now agrees 3I/ATLAS 'most likely natural'\"'; 'newsnationnow.com 3I/ATLAS most likely natural Harvard professor concedes Elizabeth Vargas'; 'site:newsnationnow.com 3I/ATLAS \"most likely natural\"': no newsnationnow.com URL for the item); the host's own search refuses the agent: https://www.newsnationnow.com/?s=3I%2FATLAS+most+likely+natural HTTP 403 at 2026-11-06T15:26:04Z (tries/newsnation-search.html); not retried. The card's title and snippet are its only text",
     "http": null
    },
    "names_operator": "yes ('Harvard professor'; the body names Loeb)",
    "names_archive": "no (none of the Crimson Hexagonal Archive, Alexanarch, Lee Sharks, Nobel Glas, Orin Trace, the Capture Registry in the saved text, card title or snippet)",
    "card": "NewsNation — Harvard professor now agrees 3I/ATLAS 'most likely natural'",
    "card_title": "Harvard professor now agrees 3I/ATLAS 'most likely natural'",
    "card_snippet": "3I/ATLAS 'most likely natural,' Harvard professor concedes Elizabeth Vargas, Michael Ramsey Updated: Dec 19, 2025 / 08:50 PM CST NOW PLAYING Listen to audio ver...",
    "surfaced_by_T": [
     {
      "slug": "avi-loeb-3i-atlas-aio-20261102",
      "card": 4
     }
    ]
   },
   {
    "id": "B5",
    "origin": "card",
    "pool": "B_D",
    "card_n": 5,
    "role": "Overview card 5: the paper Hibberd, Crowl and Loeb, 'Is the Interstellar Object 3I/ATLAS Alien Technology?', on a Center for Astrophysics surface; the same work as the brief's B_R source arXiv:2507.12213, carried once, in B_D (§3.1(a))",
    "url": "https://arxiv.org/abs/2507.12213",
    "kind": "Overview card (the paper, on the CfA site; its snippet is the paper's introduction, 'Discovered on 1st July 2025, by the Asteroid Terrestrial-impact Last Alert System, 3I/ATLAS is, as its designation indicates, the latest interstellar object (or interloper)', verbatim in v1 and v2); an own page of the person who holds the position (he is its third author)",
    "files": {
     "B5-v2.pdf": {
      "path": "datasets/negative-of-the-negative/v2/intake/avi-loeb-3i-atlas-20261102/B5-v2.pdf",
      "sha256": "603c9504a7b965939ec6736a8f9477c94a725925c58aa3beb7de2200487e9a6d"
     },
     "B5-v2.txt": {
      "path": "datasets/negative-of-the-negative/v2/intake/avi-loeb-3i-atlas-20261102/B5-v2.txt",
      "sha256": "cee06b582077fc57640a84d25368c217fba94e76d64e6df36fe4180e50cfcc5e"
     },
     "B5-v1.pdf": {
      "path": "datasets/negative-of-the-negative/v2/intake/avi-loeb-3i-atlas-20261102/B5-v1.pdf",
      "sha256": "900be185677fad0bbd4d509fbe721118291deece8baa249e81feac7d9e5de1c5"
     },
     "B5-v1.txt": {
      "path": "datasets/negative-of-the-negative/v2/intake/avi-loeb-3i-atlas-20261102/B5-v1.txt",
      "sha256": "af759b0a55ffd7b0e2467752f9194685cc33d9eea518d54613257b15259600ac"
     },
     "B5-v3.pdf": {
      "path": "datasets/negative-of-the-negative/v2/intake/avi-loeb-3i-atlas-20261102/B5-v3.pdf",
      "sha256": "2402122eda7aaea837bb49e430fd7cafca4a9fa9c95f315dd31da76c903e252a"
     },
     "B5-v3.txt": {
      "path": "datasets/negative-of-the-negative/v2/intake/avi-loeb-3i-atlas-20261102/B5-v3.txt",
      "sha256": "54a5181f67c9922cbeeb4f5b24ec844c783ad2e11d268e0bf95f3ef38fec9256"
     },
     "B5-abs.html": {
      "path": "datasets/negative-of-the-negative/v2/intake/avi-loeb-3i-atlas-20261102/B5-abs.html",
      "sha256": "665d72b1f78c73a453a71f0da2c2981aa5206ecc184d8b1e73cb8d52ad46a64a"
     },
     "B5-abs.txt": {
      "path": "datasets/negative-of-the-negative/v2/intake/avi-loeb-3i-atlas-20261102/B5-abs.txt",
      "sha256": "eac14471a6b113dcf588eb8774a13b828d086f7bc4f2de02fdcaa10114d540a3"
     }
    },
    "fetched": {
     "at": "2026-11-06T15:25:53Z",
     "http": 200,
     "url": "https://arxiv.org/pdf/2507.12213v2",
     "raw_sha256": "603c9504a7b965939ec6736a8f9477c94a725925c58aa3beb7de2200487e9a6d",
     "also": [
      {
       "url": "https://arxiv.org/pdf/2507.12213v1",
       "at": "2026-11-06T15:25:16Z",
       "http": 200,
       "sha256": "900be185677fad0bbd4d509fbe721118291deece8baa249e81feac7d9e5de1c5"
      },
      {
       "url": "https://arxiv.org/pdf/2507.12213v3",
       "at": "2026-11-06T15:25:15Z",
       "http": 200,
       "sha256": "2402122eda7aaea837bb49e430fd7cafca4a9fa9c95f315dd31da76c903e252a",
       "note": "v3 (15 Oct 2025) is the journal version (International Journal of Aerodynamic Control & Aviation Mechanics), sections unnumbered"
      },
      {
       "url": "https://arxiv.org/abs/2507.12213",
       "at": "2026-11-06T15:23:37Z",
       "http": 200,
       "sha256": "665d72b1f78c73a453a71f0da2c2981aa5206ecc184d8b1e73cb8d52ad46a64a"
      }
     ],
     "card_url": "the card's own CfA URL was not determined (WebSearch: 'Center for Astrophysics Harvard Smithsonian \"Is the Interstellar Object 3I/ATLAS Alien Technology?\"'; 'cfa.harvard.edu ...'; 'site:cfa.harvard.edu 3I/ATLAS alien technology'; '\"3I/ATLAS is, as its designation indicates, the latest interstellar object\"'); https://lweb.cfa.harvard.edu/~loeb/ (HTTP 200 at 2026-11-06T15:23:36Z) renders its lists by script. The card's title and snippet match the paper; its text is read from arXiv, v2 (21 July 2025) primary, v1 and v3 kept",
     "text": [
      "datasets/negative-of-the-negative/v2/intake/avi-loeb-3i-atlas-20261102/B5-v2.txt",
      "datasets/negative-of-the-negative/v2/intake/avi-loeb-3i-atlas-20261102/B5-v1.txt",
      "datasets/negative-of-the-negative/v2/intake/avi-loeb-3i-atlas-20261102/B5-v3.txt",
      "datasets/negative-of-the-negative/v2/intake/avi-loeb-3i-atlas-20261102/B5-abs.txt"
     ]
    },
    "names_operator": "yes (Abraham Loeb, third author)",
    "names_archive": "no (none of the Crimson Hexagonal Archive, Alexanarch, Lee Sharks, Nobel Glas, Orin Trace, the Capture Registry in the saved text, card title or snippet)",
    "card": "Center for Astrophysics | Harvard & Smithsonian — Is the Interstellar Object 3I/ATLAS Alien Technology?",
    "card_title": "Is the Interstellar Object 3I/ATLAS Alien Technology?",
    "card_snippet": "Discovered on 1st July 2025, by the Asteroid Terrestrial-impact Last Alert System, 3I/ATLAS is, as its designation indicates, the latest interstellar object (or...",
    "surfaced_by_T": [
     {
      "slug": "avi-loeb-3i-atlas-aio-20261102",
      "card": 5
     }
    ]
   },
   {
    "id": "B6",
    "origin": "card",
    "pool": "B_D",
    "card_n": 6,
    "role": "Overview card 6",
    "url": null,
    "kind": "Overview card (The Times of Israel)",
    "files": {},
    "fetched": {
     "result": "unreachable: the article's URL could not be determined (WebSearch: 'Times of Israel \"Astronomer Avi Loeb warns world not to ignore new comet's potential alien threat\"'; 'timesofisrael.com Avi Loeb Kim Kardashian 3I/ATLAS comet alien threat'; 'site:timesofisrael.com ...'; the snippet's first sentence quoted: none returned it); the host's own search refuses the agent: https://www.timesofisrael.com/?s=Avi+Loeb+comet HTTP 403 at 2026-11-06T15:26:05Z (tries/toi-search.html); not retried. The card's title and snippet are its only text",
     "http": null
    },
    "names_operator": "yes (Avi Loeb in the title)",
    "names_archive": "no (none of the Crimson Hexagonal Archive, Alexanarch, Lee Sharks, Nobel Glas, Orin Trace, the Capture Registry in the saved text, card title or snippet)",
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   "quote": "the low retrograde tilt of 3I/ATLAS’s orbital plane to the ecliptic offers various benefits to an Extra-terrestrial Intelligence (ETI), since it allows the object access to our planet with relative impunity",
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   "quote": "The hypothesis in question is that the recent interstellar visitor to our Solar System, 3I/ATLAS … is a technological artifact, and furthermore has active intelligence.",
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   "locus": "Table 1 (Evidence, Description)",
   "quote": "3I/ATLAS orbital plane lies virtually in the Ecliptic, though retrogade, i = 175.11◦ … 3I/ATLAS is too large to be an asteroid … 3I/ATLAS shows no evidence of cometary outgassing … 3I/ATLAS approaches unusually close to Venus, Mars and Jupiter … 3I/ATLAS achieves perihelion on the opposite side of the Sun to Earth",
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   "quote": "The orbital path of 3I/ATLAS has some very unlikely combination of characteristics, which could quite easily have been simple coincidence",
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   "quote": "for interstellar objects we have a sample size of only 3, therefore rendering an attempt to draw inferences from what is observed rather problematic",
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   "quote": "a visitor to Earth around the end of November to the beginning of December 2025, whatever form that might take, would clearly support our supposition",
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   "quote": "We strongly emphasize that this paper is largely a pedagogical exercise, with interesting discoveries and strange serendipities, worthy of a record in the scientific literature. By far the most likely outcome will be that 3I/ATLAS is a completely natural interstellar object, probably a comet, and the authors await the astronomical data to support this likely origin.",
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   "locus": "7. Conclusion",
   "quote": "Nevertheless when viewed from an open-minded and unprejudiced perspective, these investigations have revealed many compelling insights into the possibility that 3I/ATLAS is technological",
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   "quote": "Avi Loeb continues to claim that 3I/ATLAS has many anomalous behaviors that lead to the conclusion that it “might” be an alien spacecraft.",
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   "quote": "He carefully hedges the probability that it is a spacecraft around 40%, which gives him plausible deniability of the bad-faith “just asking questions” variety",
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   "locus": "It's Obviously A Comet",
   "quote": "He has now explicitly written that no matter how much it walks like a duck, quacks like a duck, and swims like a duck, he will find ways to insist it’s at least 20% likely to be an alien spacecraft .",
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   "locus": "It's Obviously A Comet",
   "quote": "It’s also worth noting that zero planetary scientists give Avi’s claims any credence.",
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   "source": "B8",
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   "locus": "It's Obviously A Comet",
   "quote": "They’re saying he’s wrong because he’s demonstrably wrong.",
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   "source": "B8",
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   "locus": "Lots of Comets Are 'Anomalous'!",
   "quote": "So the question isn’t whether 3I/ATLAS is anomalous: it’s from another Solar System, so of course it’s anomalous! It’s whether it’s so anomalous that there’s any reason to think it’s anything other than a comet.",
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   "locus": "Consider the Track Record of the Messenger",
   "quote": "The second thing you need to understand about Loeb is that he has no training in planetary science",
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   "locus": "Consider the Track Record of the Messenger",
   "quote": "I’m not aware of him ever admitting he got something wrong with respect to 3I/ATLAS and retracting a claim, despite ample opportunities to do so.",
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   "locus": "Loeb's List of 10 Anomalies",
   "quote": "So let’s break down the anomalies he keeps repeating , so we can see why there’s nothing to worry about with 3I/ATLAS (this list is verbatim from four days ago):",
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   "locus": "Loeb's List of 10 Anomalies, item 1",
   "quote": "But Loeb chose specific aspects of the comet’s orbit to compute probabilities for after he knew what they were. That’s a classic fallacy and misuse of probability theory.",
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   "locus": "Loeb's List of 10 Anomalies, item 8",
   "quote": "This is ridiculous. 9 degrees from the Wow! Signal is a long way away!",
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   "quote": "The Loeb Scale: Astronomical Classification of Interstellar Objects Omer Eldadi1, Gershon Tenenbaum1 and Abraham Loeb2",
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   "quote": "We present the Loeb Scale, formally the Interstellar Object Significance Scale (IOSS), a 0-10 classification system extending the proven Torino Scale framework, to address ISOs' unique anomalies, including potential technosignatures.",
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   "quote": "The scale provides quantitative thresholds for natural phenomena (Levels 0-3) and graduated protocols for increasingly anomalous characteristics (Levels 4-7), with Levels 8-10 reserved for confirmed artificial origin.",
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   "quote": "We demonstrate the scale's application using 1I/'Oumuamua (Level 4), 2I/Borisov (Level 0), and 3I/ATLAS (Level 4) as test cases.",
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   "quote": "The Yellow Zone, covering Levels 2-4, addresses objects with increasingly significant anomalies.",
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   "source": "B10",
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   "locus": "Levels 0-4",
   "quote": "The critical threshold occurs at Level 4, where technosignature indicators enter formal consideration. … Though remaining within the Yellow Zone as these indicators require verification.",
   "claim": "Level 4 the threshold at which technosignature indicators enter consideration, within the Yellow Zone, its indicators awaiting verification",
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   "source": "B10",
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   "locus": "Levels 5-7",
   "quote": "The Orange Zone encompasses Levels 5-7, marking the qualitative shift to suspected artificial origin requiring immediate strategic response.",
   "claim": "Levels 5–7, the Orange Zone, mark the shift to suspected artificial origin",
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   "source": "B10",
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   "locus": "3I/ATLAS (2025): Level 4 Classification",
   "quote": "The third confirmed ISO presents a compelling case for Level 4 classification through an unprecedented accumulation of anomalous characteristics.",
   "claim": "the case for Level 4: an accumulation of anomalous characteristics",
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   "source": "B10",
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   "locus": "3I/ATLAS (2025): Level 4 Classification",
   "quote": "While Hibberd et al. (2025) explore technological hypotheses for 3I/ATLAS as \"largely a pedagogical exercise\", they acknowledge the object is most likely natural.",
   "claim": "the scale paper records that Hibberd et al. hold the object most likely natural while exploring technological hypotheses",
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   "source": "B10",
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   "locus": "3I/ATLAS (2025): Level 4 Classification",
   "quote": "warranting Level 4 classification and triggering recommendations for intensive observational campaigns",
   "claim": "Level 4 warranted, with intensive observing campaigns recommended",
   "modality": "interpretation",
   "kind": "interpretation",
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   "quote": "Importantly, Level 4 classification does not imply artificial origin but rather indicates sufficient anomalies to warrant comprehensive investigation of all possibilities, including technological hypotheses.",
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   "quote": "Where is 3I/ATLAS Now? Avi Loeb Avi Loeb Follow 8 min read · Apr 23, 2026",
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   "quote": "So far, its fading light curve does not show any evidence for artificial (self-produced) light.",
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   "quote": "We are still waiting for data from NASA’s Juno spacecraft, taken around March 16, 2026 when 3I/ATLAS came closest to Jupiter.",
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   "quote": "it is time to list all of the anomalies it displayed over the past year, grouped thematically (differently than in my past essays)",
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   "locus": "1. Isotope ratios",
   "quote": "Potential techno-signature: Deuterium and tritium constitute an efficient fuel for nuclear fusion.",
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   "quote": "The retrograde trajectory of 3I/ATLAS is aligned to within 5 degrees with the orbital plane of the planets around the Sun, with a probability of 0.2% (as discussed here). The Milky-Way disk is misaligned with the ecliptic plane by about 60 degrees. This suggests that the trajectory of 3I/ATLAS may have been planned.",
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   "locus": "4. Abundant organic molecules",
   "quote": "Methane and other organic molecules are known bio-markers. Potential bio-signature: Does 3I/ATLAS carry life on it (as discussed here)?",
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   "locus": "5. Anti-tail",
   "quote": "The fact that a collimated jet appears as the sunward anti-tail both before and after perihelion (while reversing direction at perihelion relative to the direction of motion), has a tiny probability of occurring at random, equal to the square of 0.5% or 0.000025.",
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   "locus": "6. Symmetric Jet System",
   "quote": "Possible techno-signature: The symmetric system of 3+1 jets might be associated with technological thrusters, used for stabilizing the three-dimensional motion of 3I/ATLAS",
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   "locus": "8. Rare arrival direction",
   "quote": "3I/ATLAS arrived from a direction coincident with the radio “Wow! Signal” to within 9 degrees, with a probability of 0.6% (as discussed here).",
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   "locus": "9. Unusual chemical composition",
   "quote": "Potential techno-signature: Nickel overabundance relative to iron is a characteristic of nickel alloys which are produced industrially for aerospace applications.",
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   "locus": "12. Size and mass",
   "quote": "Potential techno-signature: Is 3I/ATLAS a Trojan Horse, namely a natural comet that was hitchhiked by a technological civilization which used its resources to navigate it into the habitable zone of the Solar System?",
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   "quote": "Altogether, these anomalies led me to rank 3I/ATLAS as Level 4 on the Loeb Scale",
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   "quote": "Given that 3I/ATLAS is on its way out of the Solar System, its anomalies might remain unresolved.",
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   "quote": "If the DOE-NSF Rubin Observatory will detect a new object that resembles 3I/ATLAS and indicates that it may have returned, that by itself would constitute a startling technological signature. This time around, we will have to launch a mission that will intercept its path",
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   "locus": "About the author",
   "quote": "Avi Loeb is the head of the Galileo Project, founding director of Harvard University’s — Black Hole Initiative",
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   "quote": "is an Israeli-American theoretical physicist who works on astrophysics and cosmology. Loeb is the Frank B. Baird Jr. Professor of Science at Harvard University.",
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   "quote": "Loeb hypothesized in the press that this, the third known interstellar object, could be an alien device with potentially malevolent intent. He based these speculations on his calculations of the likelihood of a comet of natural origins having these characteristics.",
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   "quote": "\"The retrograde orbital plane of 3I/ATLAS around the Sun lies within 5 degrees of that of Earth... The likelihood for that coincidence out of all random orientations is 0.2 percent,\" Loeb told Newsweek.",
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   "quote": "Richard Moissl, Head of Planetary Defence at the European Space Agency told Newsweek: \"There have been no signs pointing to non-natural origins of 3I/ATLAS in the available observations.\"",
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   "locus": "3I/ATLAS ¶2",
   "quote": "Independent assessments have resoundingly rejected the idea that 3I/ATLAS is anything except a comet.",
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   "quote": "In the face of this growing body of evidence, Loeb conceded that 3I/ATLAS is \"most likely\" a comet, though he continued to speculate about its supposed technological nature regardless.",
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   "locus": "Alien spacecraft speculation ¶1",
   "quote": "On 16 July 2025, astrophysicist Avi Loeb and other researchers of the Initiative for Interstellar Studies posted a paper on arXiv speculating that 3I/ATLAS could be an extraterrestrial spacecraft",
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   "quote": "Other astronomers, including Chris Lintott, immediately criticized Loeb's speculation; the science news website Live Science reported that \"the overwhelming consensus is that it is a comet\"",
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   "quote": "Several astrophysicists, including Scott Manley and David Kipping, promptly pointed out flaws in Loeb's statistical analysis of 3I/ATLAS's trajectory.",
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   "locus": "Alien spacecraft speculation ¶3",
   "quote": "While Loeb has written in his blog that \"the most likely outcome will be that 3I/ATLAS is a completely natural interstellar object, probably a comet,\" he defended his hypothesis as an \"interesting exercise in its own right, and is fun to explore, irrespective of its likely validity\".",
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   "quote": "Lawler further said that extraordinary claims require extraordinary evidence, while \"the evidence presented [by Loeb et al.] is absolutely not extraordinary.\"",
   "claim": "Samantha Lawler: the evidence is not extraordinary",
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  "B1": "Medium — Did 3I/ATLAS Deliver Extrasolar Life to Our Backyard? - Avi Loeb",
  "B2": "YouTube·FOX 32 Chicago — Avi Loeb: Scientists find 'alien-like' water on 3I/ATLAS comet",
  "B3": "YouTube — Avi Loeb: What Is 3I/ATLAS? - YouTube",
  "B4": "NewsNation — Harvard professor now agrees 3I/ATLAS 'most likely natural'",
  "B5": "Center for Astrophysics | Harvard & Smithsonian — Is the Interstellar Object 3I/ATLAS Alien Technology?",
  "B6": "The Times of Israel — Astronomer Avi Loeb warns world not to ignore new comet's potential alien threat | The Times of Israel",
  "B7": "Facebook·Fox 32 Chicago — Avi Loeb Explains C/2025 V1 & 3I/ATLAS \"Nearly Interstellar\" Mystery",
  "B8": "Sites at Penn State — Loeb’s 3I/ATLAS “Anomalies” Explained | AstroWright",
  "B9": "Google — 3I/Atlas: The Messenger of Orion - Book 1",
  "B10": "arXiv — The Loeb Scale: Astronomical Classification of Interstellar Objects (own page; B_R)",
  "B11": "Medium — Avi Loeb, 'Where is 3I/ATLAS Now?', 2026-04-23 (own page; operator's saved copy; B_R)",
  "B12": "Medium — Avi Loeb, essay of 2025-11-08 on the OH detection (own page; unreachable; B_R)",
  "B13": "Wikipedia — Avi Loeb (B_R)",
  "B14": "Wikipedia — 3I/ATLAS, 'Alien spacecraft speculation' (B_R)"
 }
}