Cloud Composition Clouds are a fascinating part of our sky, made up of countless tiny water droplets or ice crystals. When ...

In January 2023, NASA's Curiosity rover captured images of noctilucent clouds during a Martian sunset, including a rare category of iridescent bright noctilucent clouds that appear feather-shaped ...

Although picturesque sunsets usually captivate the locals and tourists of Oahu, a strange cloud caught the eye of many ...

Readers’ photos celebrate sunrises and sunsets, when the light is the most pleasing. Fifty-one photos were sent in; here are the top picks.