A new computational model suggests that Uranus' and Neptune's cores may be less icy than their "ice giant" nickname suggests.

The solar system's hottest planet and its coldest one will be in conjunction on Friday (March 31), offering a rare opportunity for skywatchers. Venus (the hottest) and Uranus (the coldest) will share ...

For decades, Uranus baffled scientists because it seemed to have no internal heat. Now, new computer modeling shows the planet actually emits more energy than it receives from the Sun. This subtle ...

For decades, Uranus and Neptune have been filed neatly into the “ice giant” drawer, shorthand for worlds built mostly from ...

If you've been wondering how long the day on Uranus is, you probably need to get out more. But if you have, you'll be interested to know that observations by the Hubble Space Telescope have shown that ...

For the first time, astronomers have detected mysterious X-rays flaring out of Uranus. How is this happening? According to NASA scientists, Uranus is so massive that it could just be scattering X-rays ...

New models suggest Uranus and Neptune may hold far more rock than expected, raising questions about how these distant planets formed.