The majority of stars in our galaxy are home to planets. The most abundant are the sub-Neptunes, planets between the size of Earth and Neptune. Calculating their density poses a problem for scientists ...

How do we know anything about the winds on these remote planets? The main sources of information date back to the close encounters of the Voyager 2 spacecraft with Uranus (in 1986) and Neptune (in ...

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