Rainbows may be a trick of the eye, but they’re also based in fascinating optical physics. Here's how they work and why we ...

The atmospheric phenomenon, technically known as a circumhorizontal arc, only occurs at precise locations under specific conditions.

The couple were walking at First Landing State Park, Virginia, US, when they saw the unusual natural phenomenon. Jeff Ripple, a former Florida swamp walk leader, told the BBC: "The rainbow sheens ...

To understand the phenomenon of a double rainbow ... “The rainbow we normally see is called the primary rainbow and is produced from one internal reflection,” explains NWS.