Case file · Sighting
Barra da Tijuca photographs
Journalists from O Cruzeiro magazine published five photos of a flying disc over Barra da Tijuca.
1952 CE · -23.00, -43.37 · status: hoax
The account
In May 1952 reporter João Martins and photographer Ed Keffel said a disc flew past them at Barra da Tijuca, Rio de Janeiro, and Keffel shot a sequence that O Cruzeiro printed as a sensation.
The sceptical view
The Condon Report says the photos contain an obvious internal inconsistency, first pointed out by Donald Menzel, and that critics flatly label the case a hoax.
The researched reading
A magazine sensation whose own shadows give it away: the lighting of the disc does not match the scene, the mark of a faked photograph.
| Explanation | Weight | Why |
|---|---|---|
| A hoax or fabrication | 88% | The Condon analysis found the disc lit from the opposite side to the landscape in the same frames, an internal inconsistency first noted by Menzel that points to a model or composite. |
| Something known, misidentified | 4% | A thrown or flying object could have been photographed, but the lighting still does not match. |
| Genuinely anomalous | 4% | The magazine presented it as genuine, but the photo analysis undercuts it. |
| A known natural phenomenon | 1% | No natural object fits. |
| A poorly understood natural phenomenon | 1% | Nothing points to an unusual natural effect. |
| Perception, memory or mind | 1% | The photographs, not perception, are the evidence. |
| Secret human technology | 1% | Nothing points to secret technology over Rio. |
Official position: The Condon Report and critics such as Menzel concluded it was a fabrication.