Watch National Geographic Mysterious Science online: Episode 11 Mystery Lights

For centuries, people around the world have witnessed a strange phenomenon - orbs of light hovering in the night sky. Some say the lights chased after them as they drove away in their cars, and military pilots have reported spotting the lights on secret missions. Many wonder if the lights could be ghosts, or visitors from outer space. Now, NGC joins the investigation and meets a team of researchers with a new theory on the origin of these strange lights.

click here to see where to watch or .