A new image from the Hubble Space Telescope shows a cosmic cloudscape, with clouds of dust and gas swirling in beautiful colors.

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

Taken over 16 minutes on January 17 the images show noctilucent or twilight clouds tinged with colour. This video has been ...

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

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