Rare atmospheric display captivates viewers with unusual colors and fleeting formation.

A "moonbow" is one of nature's rarest sights – and Victoria Falls is one of the few places on Earth where travellers might catch it.

It was a partly sunny day, with no rain in sight. But a rare type of colorful cloud formation that resembles a rainbow appeared over parts of Central Jersey on Tuesday afternoon. An apparent “fire ...

On social media, commenters weren't so sure about the iridescent clouds, asking if it was real or even hinting at chemtrails.

The caption of the post shared on Monday read," Amazing! Rare “rainbow clouds” were spotted in the sky over Indonesia.

Icelandic residents were given a stunning visual treat when a rare lunar rainbow appeared in the night sky last week. The lunar rainbow, or "moonbow," could be seen just outside the town of ...