1919 Sobral eclipse expedition
- Date of account
- 29 May 1919
- Location
- Sobral, Ceará
- Source
- model_recalled_reference
- Record updated
- 2026-10-10
Record summary
The 1919 solar-eclipse observations at Sobral were a major instrumented astronomical experiment, famous for testing general relativity. They are relevant to UAP comparison because they demonstrate how transient sky phenomena are documented through planned instrumentation, calibration, and competing data reduction. Nothing about the expedition indicates an anomalous craft. The comparison value is methodological: later claims about unusual aerial objects can be assessed against the evidentiary discipline used by eclipse observers. Some historical accounts also discuss differences between Sobral and Príncipe measurements.
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