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 ...

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. Why ...

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 ...

In and around the Arctic Circle, stunning multicolor clouds have been shining in the sky for days on end ... "Spectacular" rainbow-colored clouds have been shimmering in the skies over and ...

People in parts of Scotland last week got to witness a rare, natural light show with shimmering rainbow clouds in the sky. Stunning footage that has gone viral online shows iridescent clouds in ...

T he sky isn't just blue by chance. I t takes all the colors of the rainbow for us to see it that ... That's because blue and violet light have the shortest, smallest wavelengths.

"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 ...