GRAND RAPIDS, Mich. (WOOD) — It can stop you in your tracks if you spot it — a rare upside-down rainbow! This kind of rainbow formation is called a circumzenithal arc (CZA), and technically, it isn’t ...

A circumzenithal arc, an optical phenomenon that looks like an inverted rainbow, appeared in the sky over Xuhui district around 8:20 am Monday morning. Some of the people who spotted the phenomenon ...

On Sunday, Susan Bagwell sent WRAL a beautiful image of what appears to be an upside down rainbow. It appears to be an upside down rainbow, but it's not formed in the same way as a rainbow. It's ...

Thanks to Sue of Campbellsburg, IN for sending in this pic. The one at the top of this post is the close up of the circumzenithal arc and the one below is the whole picture. The sun was at the bottom.

Just hours after being treated to the rare sight of a lunar eclipse causing the moon to turn blood red, another unusual sky phenomenon stunned the public. The circumzenithal arc, or Bravais' arc is, ...

The rainbow that looked as if it had been painted on Wellington’s sky on Tuesday turned out to be what’s called a circumhorizontal arc. MetService meteorologist Mmathapelo Makgabutlane had explained ...

I wanted to share this photo with you. The clouds were absolutely beautiful and after taking a few pictures, I looked up and noticed the rainbow colors within the clouds, which added to how stunning ...

Social media exploded with photos of what looked like a rainbow that appeared right over the pope’s location in New York City on Friday. It was a beautiful sight, but it wasn’t a rainbow. It was ...