They can look similar to bubbles in soap or oil over water that give a rainbow appearance. They also have a similar appearance to the rainbow observed on a mother-of-pearl gemstone. Sign up for our ...

In the photos, you can see how the light scattered through the rainbow clouds, creating the aurora-like effect that has drawn so many eyes to this breathtaking phenomenon. Additional photos of the ...

Bright and dazzling, waves radiating rainbow colors sweep across the northern skies of Sweden, displaying beautiful hues. Known as "nacreous clouds" or "mother-of-pearl clouds," these clouds are a ...

A rover got a new view of some peculiar extraterrestrial clouds, flecked in rainbow colors and moving across the Martian sky.

Though sun halos can happen year-round, they are especially noticeable in the winter when ice-filled cirrus clouds are more common.

A fogbow forms the same way a rainbow does, light bends, reflects, and scatters through water droplets, but there is a key ...

Martian clouds are almost always made of dry ice, or frozen carbon dioxide. 95% of the planet's atmosphere is CO2.

Red-and-green-tinted clouds drift through the Martian sky in a new set of images captured by NASA's Curiosity rover using its ...

NASA’s Curiosity rover captured stunning images of Martian twilight clouds, revealing iridescent dry ice formations on Mars.

American space agency NASA publishes a short video showing iridescent clouds moving in the thin Martian atmosphere, as seen ...