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

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

it may reflect the color of the sky and appear bluish. Some of the most picturesque clouds occur close to sunrise and sunset when they can appear in brilliant yellows, oranges and reds.

barren world with a rocky landscape, massive dust storms and extreme temperature swings. However, a rover recently captured a splash of color in the sky as rare clouds drifted overhead.

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