But in 2014, NASA’s Terra satellite captured a near-perfect circle of clouds hovering above the Pacific Ocean. Spotted a few thousand kilometers southwest of Hawaii, this unusual ring floated ...

NASA Odyssey orbiter snapped a first-ever image of a Mars volcano peeking above some clouds before dawn. It’s twice as tall as Earth’s largest volcano ...

A dramatic video showing a "roll cloud" over a beach in Portugal is going viral on social media, leaving netizens mesmerised.

Its first released image, shown above, shows the Trifid and Lagoon nebulas as colorful pink clouds of hydrogen alongside hot blue stars. The year is not even half over.

NASA Odyssey orbiter snapped a first-ever image of a Mars volcano peeking above clouds before dawn. It’s twice as tall as Earth’s largest volcano.

The dust clouds move over the Atlantic Ocean every few days and can reach as far west as Texas. This isn't the last time the United States will see Saharan dust this summer, Douty predicted.