On August 12, 1883, the astronomerJosé Bonilla reported that he saw more than 300 dark, unidentified objects crossing before the Sun while observing sunspot activity at Zacatecas Observatory in Mexico. He was able to take several photographs, exposing wet plates at 1/100 second. Although it was subsequently suggested that the objects were actually high flying geese, Bonilla is usually given the distinction of having taken the earliest photo of an unidentified flying object, with some ufological literature interpreting the objects as either alien spacecraft or an unsolved mystery.
^Bonilla, José (1). Flammarion, Camille, ed. "Passage Sur Le Disque Solaire". L'Astronomie (in French) (Paris) IV: 347–350.Cite uses deprecated parameter |month= (help);Check date values in: |date= (help)CS1 maint: Date and year (link)