Mars, Curiosity and twilight

New images captured by NASA's Curiosity rover show colorful clouds in the sky over Mars. The images were captured by the ...
NASA's Curiosity rover photographed remnants of rippling waves in an ancient Martian lakebed, proving that the Red Planet had ...
"I'll always remember the first time I saw those iridescent clouds and was sure at first it was some color artifact." ...
Martian clouds are almost always made of dry ice, or frozen carbon dioxide. 95% of the planet's atmosphere is CO2.