Naga Fireballs

Although scientists have no understanding how they are created, Naga fireballs, also known as "Mekong lights" or "ghost lights," are named after a mythical serpent in Thai mythology. Although we refer to them as fireballs, there is no evidence to imply that they have anything to do with fire, although we are aware that many travelers have captured them on camera. Around the end of each fall, these lights can be seen on the Mekong.

Though no explanation makes sense, scientists and other web viewers have tried to analyze the photos and the occurrence. Some say that every year, methodically assembling and tossing fireballs into the air for all to witness, flamethrowers on the opposite side of the river cause them. Although it's feasible that someone would have detected these mysterious shooters given the incident has been occurring at least since the 1980s.

• Year: 1980s