While popular folklore attributes
paranormal or
supernatural explanations for the light, scientific investigations show that it is due to car headlights on the north–south stretch of US 45, approximately north of the observation area. In October 1990, a group of investigators using telescopic, spectroscopic, and travel time analysis identified the Paulding Lights as the head and tail lights of vehicles traveling on US 45 north of the observation site. In 2010, students from the
Michigan Tech chapter of the
Society of Photo-Optical Instrumentation Engineers (SPIE) used a
telescope to examine the light, and were able to see vehicles and stationary objects on a highway, including a specific
Adopt a Highway sign. They also recreated other observations related to the light, such as multicolored patterns (police flashers) and variations in intensity (high and low beams). They hypothesized that the stability of an
inversion layer allowed the lights to be visible from the stretch of highway away. Paranormal researcher
Ben Radford says that there are many cases of similar light reports across the U.S., but there are many possible sources for the lights so that there is no unifying theory as to what they can be. Some are unexplained, but others can be "headlights, campfires, aircraft, cloud reflections of distant city or vehicle lights, insects and so on... at the end of the day ..." Radford says, "it's more fun to imagine the distant glimmer is a ghostly railroad brakeman's phantom lantern than the headlights of a 2005 Honda Civic". ==See also==