The best time to see noctilucent clouds is on clear nights between late May and mid-August, about 90 to 120 minutes after ...

Noctilucent clouds usually form close to the poles, but in recent decades, they’re being spotted closer to the Equator ...

Noctilucent cloud season is upon us. If you’re in the Northern Hemisphere this summer, keep your head to the skies at sunset ...

The fleeting glow of noctilucent clouds is once again making its appearance in Earth’s upper atmosphere, signaling the start ...

The occurrence of a rare form of night cloud is increasing in parts of the world, and may serve as an indication that the presence of human-caused greenhouse gases responsible for climate change ...

Around this time, the sun never dips far below the horizon, leaving it well placed to illuminate the high-altitude icy particles as night settles in. Noctilucent clouds most commonly appear ...