The Trindade Island Photographs (1958)
On January 16, 1958, aboard the Brazilian Navy training ship Almirante Saldanha anchored near Trindade Island, civilian photographer Almiro Baraúna captured a daylight sequence of an oval, ring-topped object surrounded by a greenish mist flying over the island before vanishing at high speed over the horizon. At least 47 crew members witnessed the event.
Witnesses
47+ sailors and scientists
Why it endures
One of the very first UFO photograph series taken by a civilian witness and corroborated by dozens of military witnesses, made public by the President of Brazil himself.
Official version (contested)
The Brazilian Navy conducted a thorough investigation without ever identifying the object, publishing an official report titled "Clarification on the observation of unidentified flying objects."