Noctilucent clouds, Earth's highest clouds, shine blue in the twilight sky from late May to August in the northern hemisphere ...

Here's when and where to look for the best chance of seeing Noctilucent, 'night shining' clouds in summer 2025.

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

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

Cappucci went on: "Because the sun is near the horizon—it's sunset—it's beneath the cloud. That means the cloud ... sun and casts a shadow across the sky." Cappucci also said the dark band ...

ABOUT sunset on the evening of Sunday ... which I will briefly describe. Two large clouds, covering a considerable portion of the western sky, and separated by an interval leading generally ...

which began more than an hour after sunset. It was certainly due to cirrus or a higher kind of cloud, because (1) parts of the illuminated sky stretched in long streaks southwards, and the glow ...

Watch this incredible footage of mammatus clouds forming over the sunset. Liz Legge from Indianapolis, USA, captured the rare event as the clouds passed through her neighbourhood. Despite over four ...

Weather officials say different types of clouds can tell you what kind of weather to expect. Here's a look at the different types.

Astronomers and clouds are natural enemies, owing largely to the latter's habit of obscuring the sky beyond with dense ... sun's reflected light in the post-sunset and predawn hours.