On Earth, clouds and rain are made of water. But the James Webb Space Telescope has found that on a planet called WASP-107b, the rain and clouds are made of sand.

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

By all accounts, astronomers believed the planet should be too hot to even have clouds. That’s because it was estimated to have a surface temperature of roughly 2,000 degrees Celsius.

If there’s a planet in this cloud, it’d almost definitely be an ice giant. When large planets like Jupiter, Saturn, Uranus, or Neptune form, they’re born as twins.

A city council meeting in Alameda, Calif. on Tuesday will take center stage in the global controversy over whether to try cool the planet by making clouds brighter. Researchers at the University ...

A planet five times the size of Earth was found to be the shiniest planet outside our solar system. Its mirror-like layer of clouds is laced with scorching titanium that rains down on its surface.

A strange, gargantuan wall of acid-filled clouds on our neighboring planet Venus has been spotted by a hobbyist astronomer. This structure, known as the Venus Cloud Discontinuity, is around 5,000 ...

A dazzling image taken by NASA's 2001 Mars Odyssey orbiter shows an unprecedented view of a 12-mile-high volcano poking through clouds at dawn on the Red Planet.