Tuesday evening, if you happened to be looking up, you may have seen some rainbow-esqe clouds high in the sky.

The technical term for this is an iridescence cloud. This happens when sunlight hits tiny ice crystals or water droplets near ...

A beautiful and relatively rare sight was captured Wednesday evening over Palm Beach County as a rainbow cloud formed.

Social media users were blown away by the scene in the viral clip, with one saying: "the odds of catching this must be astronomical." ...

Refraction off of raindrops causes a rainbow to form. The sunlight needs to be behind you. It can also be hard to see cloud iridescence because the cloud is usually close to where the sun is in ...

For a rainbow to be visible, the sun has to be at a 42-degree angle to the raindrops that are falling in front of you for the process of light refraction to work.