{
  "purpose": "Original, brief educational summaries and project-authored answer-style guidance. Demonstration only.",
  "reviewed_on": "2026-10-19",
  "notices": "No endorsement by NASA. Linked sources support physical explanations; project guidance is separately identified. Review claims before expanding the dataset. Follow each source's reuse terms, including exceptions for third-party material.",
  "splits": {
    "train": {
      "bytes": 3280,
      "purpose": "Optimization only"
    },
    "validation": {
      "bytes": 1000,
      "purpose": "Model selection"
    },
    "test": {
      "bytes": 1066,
      "purpose": "Final evaluation only"
    }
  },
  "sources": [
    {
      "split": "train",
      "url": "https://science.nasa.gov/universe/overview/"
    },
    {
      "split": "train",
      "url": "https://science.nasa.gov/sun/facts/"
    },
    {
      "split": "train",
      "url": "https://science.nasa.gov/universe/black-holes/"
    },
    {
      "split": "validation",
      "url": "https://science.nasa.gov/missions/hubble/dark-matter/"
    },
    {
      "split": "test",
      "url": "https://science.nasa.gov/climate-change/causes/"
    }
  ]
}