The biggest rainbow in the solar system was just captured by newly-launched spacecraft as NASA scientists study the sun and try to better predict space weather.

According to experts, the eye-catching weather phenomenon, also known as cloud iridescence, is relatively rare, but one was recently spotted in a blue sky over northeast Ohio.

Check out this beautiful photo of nacreous clouds, also known as rainbow clouds, from southern Indiana. Here's how the phenomenon occurs.

At 300 light-years away, the interstellar cloud is the closest of its kind ever found to Earth and the largest apparent single structure in the sky.

Droplet temperature measurement is critically required in the research of icing cloud field, providing empirical data and optimization guidance for models on heat and mass transfer. Rainbow ...

A rare rainbow-coloured cloud amazed residents in Indonesia. Footage shows the vibrant weather phenomenon in neon red, blue, green, yellow, and violet behind dark clouds in the sky in Tidore city ...

Create your own DIY rainbow cloud and brighten your day! Donald Trump's remarks about Putin leave Russian state TV stunned Dumb Things In The Big Bang Theory That Everyone Ignores ‘Ridiculous ...

A "22° halo" phenomenon appeared around the sun in the Bay Area, caused by sunlight refracting through ice crystals in cirrostratus clouds.

A 2012 satellite photo captured an unusual "double rainbow" glory appearing next to an unconnected chain of rare vortices in the clouds above Mexico's Guadalupe Island.

A young man is awestruck when he discovers the existence of rainbow clouds over the Austrian Alps. The phenomena is a rare weather event.