{
  "author": "ChronologiaOS editorial guides",
  "date": "2026-10-07",
  "department": "Technology & Astronomy",
  "department_id": "TECHNOLOGY",
  "epistemic_label": "Source guide",
  "epistemic_status": "SOURCE_GUIDE",
  "period": "Ancient Greek world",
  "place": "Eastern Mediterranean",
  "public_sources": [
    {
      "publisher": "Freeth et al. \u00b7 Scientific Reports, 2021",
      "title": "A Model of the Cosmos in the ancient Greek Antikythera Mechanism",
      "type": "Primary research paper",
      "url": "https://pmc.ncbi.nlm.nih.gov/articles/PMC7955085/"
    },
    {
      "publisher": "Scientific Reports, 2021",
      "title": "Author Correction: A Model of the Cosmos",
      "type": "Published correction",
      "url": "https://pmc.ncbi.nlm.nih.gov/articles/PMC8385020/"
    }
  ],
  "publication_state": "PUBLIC",
  "read_time": "3 min read",
  "sections": [
    {
      "body": "The 2021 Antikythera study describes an ancient Greek astronomical calculator preserved in 82 fragments, with about a third of the original surviving. The remains include bronze gears and inscriptions.",
      "heading": "The surviving object",
      "source": 0
    },
    {
      "body": "The authors use physical evidence and inscription readings to propose a reconstruction of the front display. This is a research model for missing parts, not a newly recovered complete machine.",
      "heading": "A model is a proposal",
      "source": 0
    },
    {
      "body": "Trace one proposed part back to the evidence that constrains it. What comes from a surviving fragment? What comes from a text? What depends on an assumption? A model becomes easier to evaluate when those layers stay visible.",
      "heading": "Test the reconstruction"
    },
    {
      "body": "Read the paper alongside its published correction and look for which conclusions the available material can support. An impressive visualization can explain a proposal; it cannot replace the evidence for it.",
      "heading": "Keep the record open"
    }
  ],
  "short_title": "Can fragments reveal a machine?",
  "slug": "antikythera-fragments-and-reconstruction",
  "summary": "Follow the evidence behind an ancient astronomical mechanism and distinguish surviving material from a proposed reconstruction.",
  "tags": [
    "Antikythera",
    "Astronomy",
    "Technology",
    "Reconstruction"
  ],
  "title": "Antikythera: how much can a fragment reveal?"
}