Astronomers have been puzzling over a mystery on Neptune, and now they think they have unlocked its secret. The ice giant’s ghostly, cirrus-like clouds largely disappeared four years ago. Today, just ...

When Voyager returned the first detailed pictures of Neptune in the summer of 1989, we got our first glimpse of the cloud features in its distant sky. Since then, astronomers have followed up those ...

On Thursday (Aug. 17), astronomers announced quite an unexpected update about one of our solar system's ice giants, Neptune: It would appear that the azure world's clouds have all but disappeared.

Stephen has degrees in science (Physics major) and arts (English Literature and the History and Philosophy of Science), as well as a Graduate Diploma in Science Communication. Stephen has degrees in ...

Neptune’s mid-latitude clouds began fading in 2019 and have not recovered, according to nearly three decades of observations from the Hubble Space Telescope and ground-based observatories. By 2020, ...

Neptune, the distant ice giant, has thrown astronomers for a loop as its once-constant clouds have mysteriously disappeared, revealing a previously unseen side of this mysterious planet. The latest ...

Neptune, captured by the Voyager 2 spacecraft. A new study finds a link between the planet's cloud coverage and solar activity. NASA / JPL As the outermost planet in the solar system, Neptune is more ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Astronomers have ...

Neptune receives a tiny fraction of the sunlight that strikes Earth, yet somehow, that’s enough to transform the clouds of this faraway world. The main driver of cloud formation is generally the ...