Data studies
Corrections
When an error is found in any study, it is fixed on the study page and listed here, with what was wrong and what the page now says. If you spot something that looks wrong, please get in touch through tristanhotham.com.
2026
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Rings in the Rock
The distance from Ilkley to Mogor was given as about 1,200 km. It is about 1,380 km.
In the ring anatomy model, the note said that with nine rings the outermost ring is longer than the first four rings combined. It is longer than the first three rings combined, not the first four.