FOX 13 News viewers sent in a bunch of photos of what appeared to be "rainbow clouds" featuring lush colors against a bright blue sky. Most of ... scatter the sun's light" in a variety of ...

"I opened the door of the room and saw this show in the sky. It looked like a painting!" Screenshots from Paviola's video of the rare rainbow ... clouds. The diffraction and interference of light ...

As sunlight passes through these tiny particles it diffracts and the colors are separated into different wavelengths creating the stunning 'rainbow' effect in the sky. Nacreous clouds need very ...

From UFO-like rings and whirlpools of light to rainbow clouds ... it into a bright blue blob with a fuzzy halo. This ethereal whirlpool of blue light appeared in the night sky above Alaska ...

Residents across Scotland witnessed a rare, natural light show with shimmering rainbow clouds in the sky. Several people across the country were treated to views of the colourful nacreous clouds.

The sky is always changing colors—from a bright blue on a clear day, to red and orange sunrises or sunsets, or multiple colors of a rainbow—there’s a lot going on that we don’t always think about.

"He explained what causes a "rainbow cloud" phenomenon: They occur when the sun's rays interact with ice crystals or water droplets in the high-altitude clouds.That causes the light to diffract ...

Unlike regular rainbows, which are caused by sunlight passing through raindrops falling in the sky, rainbow clouds ... crystals scatter the sun's light," NOAA said. Cloud iridescence is rare ...