NASA scientists have sought to understand planet Jupiter, the gas giant whose mass is more than the rest of the planets in ...

What’s more, data from Juno’s Io flybys has revealed the subsurface temperature profile of Io, the innermost of the four ...

Recent flybys of the fiery world refute a leading theory of its inner structure — and reveal how little is understood about ...

One of the big surprises: Despite the moon's cooled crust, the data shows Io maintains liquid hot lava just below the ground.

On the fiery Io, the innermost and third-largest of Jupiter’s four Galilean moons, Juno's observations have provided more insights about its incessant volcanic activity. It's a world home to ...