On August 12, the astronomer José Bonilla photographed hundreds of dark objects crossing the sun while observing sunspot activity at Zacatecas Observatory in Mexico. Bonilla published an account of the event three years later in L’Astronomie, a French astronomy monthly, which is still published to the current day in 2024.

The photographs taken during the Bonilla observation are generally regarded as one of the first known examples of photographs of “unidentified flying objects.”