For centuries, witnesses have described luminous spheres appearing during or after thunderstorms. The reported objects may hover, drift, pass near buildings and vanish quietly or with a sharp sound, ...

For centuries, people caught in violent thunderstorms have reported seeing something that ordinary lightning cannot account for: a glowing sphere, often about the size of a grapefruit, that floats ...

Add Yahoo as a preferred source to see more of our stories on Google. During a recent lightning storm, a couple from Canada caught a rare weather mystery on camera. Right from their porch, Ed and ...