Curiosity, a set of NASA's robotic "eyes" on the Red Planet, recorded 16 minutes of so-called noctilucent clouds flying overhead on Jan. 17. These clouds, sometimes referred to as twilight clouds ...

The iridescent cloud reveals new clues about ice formation in the Martian atmosphere (no little green men, sorry).

Rain clouds tend to form no more than 10 miles up ... he actually thought it was a mistake — some kind of color artifact appearing in the images. Now scientists can predict and plan for them.

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

"I'll always remember the first time I saw those iridescent clouds and was sure at first it was some color artifact." ...

If you buy through a BGR link, we may earn an affiliate commission, helping support our expert product labs. Photographers have captured breathtaking photos of “rainbow clouds” shining in the ...