Curiosity, noctilucent cloud and Mars

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