At any given time, about two-thirds of Earth's surface is covered by clouds. Overall, they make the planet much cooler than ...

A rare and extraordinary atmospheric phenomenon has been documented above the Himalayas, where over 100 red sprite lightning ...

Puffy, wispy, white and gray, we’ve seen them all this spring. Clouds come in a variety of types, and each type comes with ...

Southern astronomers get to see the Milky Way’s core overhead and enjoy many star clusters and nebulae that are hidden for us ...

During the week ahead, watch for Mars in the evening sky as it moves its way slowly night by night, left to right, above the bright star Regulus in the constellation of Leo, the Lion, situated above ...

A journey across southern Peru takes Stanley Stewart from the grand squares of Arequipa, through canyons where condors soar, ...

Fireflies need darkness to communicate. Males perform an airborne dance while flashing their abdominal lanterns in a pattern ...

NASA is launching rockets from a remote Pacific island to study mysterious, high-altitude cloud-like structures that can disrupt critical ...

Take in the attractions of the three ancient cities of Xinjiang — Urumqi, Turpan, and Kashgar —as well as the region’s ...

Due to their high altitude, these space clouds are lit up by the Sun long after it has set, creating stunning displays of electric blue streaks shining in the sky.