An exploded view of an ice giant planet such as Uranus or Neptune. A new theory proposes that below the dense atmosphere lies a water-rich layer (blue) that has separated from a deeper layer of hot, ...

The proposed mission, known as Uranus Orbiter and Probe (UOP), would conduct a multiyear orbital tour to yield knowledge of ...

Encountering Neptune in 1989, NASA’s Voyager mission completed humankind’s first close-up exploration of the four giant outer ...

On Greenland’s ice sheet, signs of giant viruses have been detected, and they could help reduce some of the effects […] ...

In our search for exoplanets, we’ve found that many of them fall into certain types or categories, such as Hot Jupiters, ...

A scientist simulated the contents of the ice giant worlds, and found that a fluid layer may explain each planet’s strange magnetic field. By Jonathan O’Callaghan Jonathan O’Callaghan ...

They are extrasolar gas giants which are the size of Neptune or larger. Unfortunately, such gas giant planets are hardly harbingers of life as we know it. But they are a necessary stop on the long ...

Instead of ice volcanoes, Io has the real thing, and more than anywhere else in the Solar ... Since Io orbits Jupiter every 1 ...

The Hubble Space Telescope has been imaging the outer planets of our solar system for a decade, learning about their strange ...

An exploded view of an ice giant planet such as Uranus or Neptune. A new theory proposes that below the dense atmosphere lies a water-rich layer (blue) that has separated from a deeper layer of hot, ...