Rainbows are a common sight to see across the globe and are formed when the suns rays come in contact with water droplets.

Watch: This photographer's footage of a double rainbow, as seen from a trail in the Golden Gate National Recreation Area, will blow you away.

Fire rainbows, a phenomenon that captivates both the eye and the imagination, are a rare sight in the sky. When these ...

"The respective sizes of the two arcs also create a great symbolic representation of the difference in scale between what we ...