ExoDiff
Where does exoplanet data disagree?
A data experiment.
About ExoDiff
data sources
- NASA Exoplanet Archive
- NASA Exoplanet Catalog
- exoplanet.eu
- Gaia DR3
- SIMBAD, used to match star names between catalogues
implementation
Built with Claude Opus 5.5. The data processing and comparisons are performed by ordinary code, not by an AI model interpreting the measurements.
ExoDiff is an independent project and is not affiliated with NASA, Caltech, ESA, exoplanet.eu or CDS.
For the checks, statistical rules, validation results and limitations, see the methodology page.
credits
This research has made use of the NASA Exoplanet Archive, which is operated by the California Institute of Technology, under contract with the National Aeronautics and Space Administration under the Exoplanet Exploration Program.
This research has made use of data obtained from or tools provided by the portal exoplanet.eu of The Extrasolar Planets Encyclopaedia (CC BY 4.0).
Gaia data: ESA/Gaia/DPAC, CC BY-NC 3.0 IGO.
This research has made use of the SIMBAD database, CDS, Strasbourg Astronomical Observatory, France.
Methodology
the checks
when is a difference a finding?
the formula, for the technical reader
how uncertainty is handled
validation
implementation and review
Claude Opus 5.5 proposed the checks and wrote the code. The author selected and approved the checks.
The numbers are produced by ordinary code that can be rerun; no AI model reads the measurements to generate the results. AI review panels checked the data handling.