Uranus and Neptune may contain rocky atmospheres, with new research challenging long-held ice giant identity.

Because Uranus and Neptune are so far away, scientists only have educated guesses about the combination of ices and gases that make up these ice giants. While the general understanding is that these ...

Uranus and Neptune have been called the “ice giants” for decades. But in new research, that nickname might be more a misnomer than anything. A study by the lead researchers astrophysicists Luca Morf ...

"Rather than 'icy' or 'rocky,' we should simply call them minor giants." ...

For generations, Uranus and Neptune have stood as the solar system’s frozen outliers, distant blue worlds believed to be ...

The Hubble Space Telescope has peered at Uranus, left, and Neptune to study the so-called "ice giant" planets, but little is known about their interior composition. - NASA / ESA / M. Showalter / L.

Neptune is fondly known for being a rich blue and Uranus green -- but a new study has revealed that the two ice giants are actually far closer in color than typically thought. The correct shades of ...

A study suggests the ice giants Uranus and Neptune aren't quite as watery as previously thought. They may also contain huge amounts of frozen methane, potentially solving the puzzle of how they formed ...

A new study may redefine how we classify Uranus and Neptune, suggesting that they may no longer be referred to as ice giants ...