Jupiter’s moon Callisto passes near the planet’s northern limb, shortly before Io transits and Ganymede emerges from the gas ...

The moon spent a few million years as a volcanic wasteland, covered with ongoing eruptions that spewed from mountains and ...

A group of swirling storms at Jupiter's north pole are bouncing off each other, like bumper cars at the fairground.

Wausau Pilot & Review Central Wisconsin stargazers have plenty to see this week, with celestial events ranging from a ...

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

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

A celestial leap is set to take place over two nights as the moon and Jupiter will appear to dance near to each other in the ...

NASA Juno spacecraft data has been used to create an animation of "Steeple Mountain" and a lava lake known as Loki Patera on ...

New research suggests that the moon's orbit could have turned it into a molten monster for a few tens of millions of years. The result may have been comparable to Jupiter's moon Io, the most ...

New data from the orbiter has unveiled some of the treacherous conditions of not only Jupiter, but its moon Io, the most volcanic body in the solar system. The findings, which come after Juno has ...