{
  "title": "How we find new worlds",
  "data_source": "NASA Exoplanet Archive, Planetary Systems Composite Parameters (pscomppars)",
  "source_url": "https://exoplanetarchive.ipac.caltech.edu/docs/pscp_about.html",
  "query": "select pl_name,discoverymethod,disc_year from pscomppars where disc_year<=2025 order by disc_year,pl_name",
  "retrieved_at": "2026-10-15T06:12:54.626314+00:00",
  "original_planets": 6090,
  "unique_names": 6090,
  "methods": [
    "Transit",
    "Radial Velocity",
    "Microlensing",
    "Imaging"
  ],
  "selection": "Four largest discovery-method groups, 6020 of 6090 confirmed planets with discovery year<=2025; other methods omitted. Not a count of all planets in the universe.",
  "transform": "For each year1995–2025 count currently confirmed planets with disc_year<=year by discoverymethod.124 integer counts, no division or rounding.2026 excluded. Archive snapshot classified retrospectively; not historical database snapshots. Annual animation is visual interpolation.",
  "acknowledgement": "Data from the NASA Exoplanet Archive, operated by Caltech under contract with NASA under the Exoplanet Exploration Program.",
  "acknowledgement_url": "https://exoplanetarchive.ipac.caltech.edu/docs/acknowledge.html",
  "image": {
    "url": "https://assets.science.nasa.gov/content/dam/science/psd/photojournal/pia/pia17/pia17001/PIA17001.jpg",
    "source": "https://science.nasa.gov/photojournal/kepler-62f-a-small-habitable-zone-world-artist-concept/",
    "credit": "NASA/Ames/JPL-Caltech; artist concept Kepler-62f",
    "rights": "https://www.jpl.nasa.gov/jpl-image-use-policy/",
    "meaning": "Illustrative artist concept; not a telescope photograph or endorsement."
  },
  "hashes": {
    "exoplanets-raw.json": "e04c179ca9ca0e89e7e89027de1f836661bd2efbdaf359289398cb3ac242f6d0",
    "exoplanets.csv": "dec46adabc8745c1e29ac4b423a834b063cfc609fdd0b6d3c6cf6b130d318104",
    "planet.jpg": "9c9dc88ae8791920ba68dffd9dd75c39376cd8ac78ec40067c97689d3e6bce74",
    "exoplanets-mobile.csv": "b3f12c00b9ee66aa81eebd6dc53b66dd74e805f4a322e4b55e023a69d5e91d30"
  },
  "aliases": {
    "Star wobble": "Radial Velocity",
    "Gravity lens": "Microlensing"
  }
}