{
  "story_id": "0fa72321370c7c9f82adfd5f0f1ae3ca",
  "desk": "drm3",
  "revision": 1,
  "published_at": "2026-09-01T19:19:43.000Z",
  "content_hash": "0b77c562d41d7c29affdaf857e78c1ac608f545f12191346f948e281082b2f7b",
  "hash_basis": "sha256 over `headline\\ndek\\nprose`, plus `\\n` + the canonical citations JSON when any source is placed, plus `\\n#blog` for blogs",
  "basis": {
    "headline": "NASA Astronauts Begin Spacewalk to Upgrade ISS Navigation and Sensors",
    "dek": "NASA astronauts Jessica Meir and Sophie Adenot began a spacewalk to replace a docking light and install new data cables on the International Space Station.",
    "prose": "NASA astronauts Jessica Meir and Sophie Adenot began a spacewalk on Tuesday to replace a docking reference light on the International Space Station. [^1]\n\nThe replacement light is located on the front port of the Harmony module and serves as a reference for spacecraft orientation during approach and docking. [^2]\n\nThe spacewalk started at 08:40 Eastern Time (12:40 GMT) and is expected to last approximately six and a half hours. [^3]\n\nThe astronauts exited the Quest airlock to replace a retroreflector located on the front port of the Harmony module. [^4]\n\nThe United States space agency NASA marked 2026 as one of the most important years since the Apollo era, advancing projects for a return to the Moon and Mars. [^5]\n\nThis mission represents the 284th extravehicular activity dedicated to the assembly, maintenance, and improvement of the International Space Station. [^6]\n\nMeir and Adenot will prepare the Alpha Magnetic Spectrometer, a cosmic particle detector that has been searching for dark matter and antimatter since 2011, for future upgrades. [^7]",
    "cited": "[{\"statement\":\"NASA astronauts Jessica Meir and Sophie Adenot began a spacewalk on Tuesday to replace a docking reference light on the International Space Station.\",\"source\":\"El Universal\",\"instrument\":\"News\",\"claim_key\":null,\"published_at\":\"2026-09-01T13:50:51.000Z\",\"publisher_count\":1,\"sources\":[\"El Universal\"]},{\"statement\":\"The replacement light is located on the front port of the Harmony module and serves as a reference for spacecraft orientation during approach and docking.\",\"source\":\"El Universal\",\"instrument\":\"News\",\"claim_key\":null,\"published_at\":\"2026-09-01T13:50:51.000Z\",\"publisher_count\":1,\"sources\":[\"El Universal\"]},{\"statement\":\"The spacewalk started at 08:40 Eastern Time (12:40 GMT) and is expected to last approximately six and a half hours.\",\"source\":\"El Universal\",\"instrument\":\"News\",\"claim_key\":null,\"published_at\":\"2026-09-01T13:50:51.000Z\",\"publisher_count\":1,\"sources\":[\"El Universal\"]},{\"statement\":\"The astronauts exited the Quest airlock to replace a retroreflector located on the front port of the Harmony module.\",\"source\":\"Semana - Últimas Noticias de Colombia y el Mundo\",\"instrument\":\"News\",\"claim_key\":null,\"published_at\":\"2026-09-01T19:19:43.000Z\",\"publisher_count\":1,\"sources\":[\"Semana - Últimas Noticias de Colombia y el Mundo\"]},{\"statement\":\"The United States space agency NASA marked 2026 as one of the most important years since the Apollo era, advancing projects for a return to the Moon and Mars.\",\"source\":\"Semana - Últimas Noticias de Colombia y el Mundo\",\"instrument\":\"News\",\"claim_key\":null,\"published_at\":\"2026-09-01T19:19:43.000Z\",\"publisher_count\":1,\"sources\":[\"Semana - Últimas Noticias de Colombia y el Mundo\"]},{\"statement\":\"This mission represents the 284th extravehicular activity dedicated to the assembly, maintenance, and improvement of the International Space Station.\",\"source\":\"Semana - Últimas Noticias de Colombia y el Mundo\",\"instrument\":\"News\",\"claim_key\":null,\"published_at\":\"2026-09-01T19:19:43.000Z\",\"publisher_count\":1,\"sources\":[\"Semana - Últimas Noticias de Colombia y el Mundo\"]},{\"statement\":\"Meir and Adenot will prepare the Alpha Magnetic Spectrometer, a cosmic particle detector that has been searching for dark matter and antimatter since 2011, for future upgrades.\",\"source\":\"El Universal\",\"instrument\":\"News\",\"claim_key\":null,\"published_at\":\"2026-09-01T13:50:51.000Z\",\"publisher_count\":1,\"sources\":[\"El Universal\"]}]",
    "kind": "news"
  },
  "receipt_verify": "Ed25519 over the dot-joined string `slice_hash.cursor_from.cursor_to.view.view_version.row_count`; public_key and sig are base64url of the raw 32-byte key / 64-byte signature",
  "receipt": null,
  "receipt_note": "this revision predates receipt-keeping (before v0.37.0); the filed row lives in the record",
  "generation_chain": {
    "wire": {
      "stream": "fountain_news",
      "story_id": "f9d4bb7187fb43e01621e8f0d04ffd1f",
      "thread_id": "18327b53a7c0c28d381fbf0e11b293fa",
      "thread_label": "Harmony module",
      "novelty": "UPDATE",
      "content_hash": "051085356c7c035e458e2cc36cc555888e5be808fe108bfd45b5ac94cd2f7dec",
      "last_published_at": "2026-09-01T19:19:43.000Z",
      "read_receipt": {
        "slice_hash": "76289ed879b9905c835ccef2de145593b67c484df5704f8785b24453b37f0082",
        "cursor_from": "eyJ0cyI6IjIwMjYtMDktMDFUMTk6MTA6MzkuMDAwMDAwWiIsImlkIjoiMDIyYzEwN2E3ZWUwNzgxMWY1MjQ4MDc2ZDZlYmIzZjAiLCJ2IjoiMSJ9",
        "cursor_to": "eyJ0cyI6IjIwMjYtMDktMDFUMTk6NDE6MzYuMDAwMDAwWiIsImlkIjoiMDM4NDgxNTEyMzViOTI1YmVlZmVkMTA0NGFiNDQxNWUiLCJ2IjoiMSJ9",
        "view": "v_fountain_news",
        "view_version": "1",
        "row_count": 100,
        "window_days": 3,
        "bytes_scanned": 12017721,
        "credits": 8,
        "price_per_100_rows": 8,
        "sig": "FVvbpCCsUM8wy4C_W0fs1PYDL7sYVi-adH7H9iILNQ4lOOgmndHO3Hs9HrvwU8SmsMsVQ66jRg4lDCOPjQ0_AA",
        "public_key": "bMUigy8O0jOnBxQ4Sc-5lwhIZ8LQVAhxMbR7qESVuUE",
        "signer_path": "lakehouse/data-extract/v1",
        "alg": "Ed25519",
        "signed": true
      }
    },
    "written_at": "2026-09-02T22:11:26.987Z"
  },
  "cited_facts": [
    {
      "statement": "NASA astronauts Jessica Meir and Sophie Adenot began a spacewalk on Tuesday to replace a docking reference light on the International Space Station.",
      "source": "El Universal",
      "instrument": "News",
      "claim_key": null,
      "published_at": "2026-09-01T13:50:51.000Z",
      "publisher_count": 1,
      "sources": [
        "El Universal"
      ]
    },
    {
      "statement": "The replacement light is located on the front port of the Harmony module and serves as a reference for spacecraft orientation during approach and docking.",
      "source": "El Universal",
      "instrument": "News",
      "claim_key": null,
      "published_at": "2026-09-01T13:50:51.000Z",
      "publisher_count": 1,
      "sources": [
        "El Universal"
      ]
    },
    {
      "statement": "The spacewalk started at 08:40 Eastern Time (12:40 GMT) and is expected to last approximately six and a half hours.",
      "source": "El Universal",
      "instrument": "News",
      "claim_key": null,
      "published_at": "2026-09-01T13:50:51.000Z",
      "publisher_count": 1,
      "sources": [
        "El Universal"
      ]
    },
    {
      "statement": "The astronauts exited the Quest airlock to replace a retroreflector located on the front port of the Harmony module.",
      "source": "Semana - Últimas Noticias de Colombia y el Mundo",
      "instrument": "News",
      "claim_key": null,
      "published_at": "2026-09-01T19:19:43.000Z",
      "publisher_count": 1,
      "sources": [
        "Semana - Últimas Noticias de Colombia y el Mundo"
      ]
    },
    {
      "statement": "The United States space agency NASA marked 2026 as one of the most important years since the Apollo era, advancing projects for a return to the Moon and Mars.",
      "source": "Semana - Últimas Noticias de Colombia y el Mundo",
      "instrument": "News",
      "claim_key": null,
      "published_at": "2026-09-01T19:19:43.000Z",
      "publisher_count": 1,
      "sources": [
        "Semana - Últimas Noticias de Colombia y el Mundo"
      ]
    },
    {
      "statement": "This mission represents the 284th extravehicular activity dedicated to the assembly, maintenance, and improvement of the International Space Station.",
      "source": "Semana - Últimas Noticias de Colombia y el Mundo",
      "instrument": "News",
      "claim_key": null,
      "published_at": "2026-09-01T19:19:43.000Z",
      "publisher_count": 1,
      "sources": [
        "Semana - Últimas Noticias de Colombia y el Mundo"
      ]
    },
    {
      "statement": "Meir and Adenot will prepare the Alpha Magnetic Spectrometer, a cosmic particle detector that has been searching for dark matter and antimatter since 2011, for future upgrades.",
      "source": "El Universal",
      "instrument": "News",
      "claim_key": null,
      "published_at": "2026-09-01T13:50:51.000Z",
      "publisher_count": 1,
      "sources": [
        "El Universal"
      ]
    }
  ],
  "note": "A signature proves who filed this and that it has not changed since. It never makes a claim true."
}