The Eleven Lights of Campeche
The account
A Mexican Air Force plane filmed eleven objects, invisible to the naked eye, that surrounded it in the sky.
What investigators found
The most widely accepted explanation is gas flares from the oil platforms in the Bay of Campeche.
The story
On March 5, 2004, a Mexican Air Force surveillance plane was patrolling the southern Gulf of Mexico, near Campeche, looking for drug-trafficking flights. Its infrared camera recorded a group of hot spots that shifted position, though the crew could not see them with the naked eye. In May, the Ministry of Defense itself handed the video to journalist Jaime Maussan, who released it at a press conference.
Mexican and foreign researchers compared the camera's heading with a map of the area and concluded that the spots match the flares from oil platforms in the Cantarell field. The apparent movement would be an effect of the plane's own motion. Ufologists dispute the analysis, but it is the most widely accepted.