Enjoy this beautiful, cooler Friday! Temperatures will stay below average, with clouds to rain and storms returning to our ...

A stunning cloud iridescence created a bright silhouette above the mountains in the Philippines. Footage shows the optical ...

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

Check out this beautiful photo of nacreous clouds, also known as rainbow clouds, from southern Indiana. Here's how the ...