æronomic phenomena

Whilst exploring the foothills of Aeolis Mons, Curiosity took a pause to look into the twilight skies and caught an amazing glimpse of wispy clouds sweeping overhead, conditions being just right to illuminate the microscopic ice crystals that make up this special classification (see also) called a noctilucent (“night shining”) cloud.
During the balance of the day, the Martian sky has a butterscotch hue but at dawn and dusk, it appears blue, the opposite situation than here on Earth, due to dust in the air and the lack of an ozone layer. It’s not the first observation of clouds in the thin atmosphere of the Red Planet and they flank the promontory of towering volcanic mountains and have been seen to gather elsewhere but it is certainly an inspiring, otherworldly sight.