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

While the moon once had a weak magnetic field generated by a small molten core, the team's research suggests it likely wouldn ...

Io is Jupiter's third-largest moon, spanning roughly 2,300 miles (3,700 ... which is driven by internal heating from our planet's molten metal core. For decades, researchers speculated that ...

Are Io’s volcanoes fed from reservoirs just underneath its crust, does the heat well up from some far deeper source, near the moon’s metallic core? Solving this mystery could also help reveal ...

It slowly became clear that Io, which is a bit smaller than ... lighter isotope suggests that anything in the core isn't participating in the moon's volcanic activity. The intriguing thing about ...

During recent flybys of the volcanic moon by NASA’s Juno spacecraft, scientists measured Io’s gravitational effect on Juno ... what we would call a deep magma ocean versus a liquid core,” Park said.

Analyzing gravity data collected by spacecraft orbiting other worlds reveals groundbreaking insights about planetary ...

NASA scientists said Wednesday that they’ve unearthed new secrets about the moon. Specifically, they’ve gotten a better look ...

We knew data from Juno’s two very close flybys could give us some insights on how this tortured moon actually worked.” Io orbits around Jupiter, the largest planet in our solar system ...

No moon in our solar system is likely as chaotic as Io, Jupiter’s third largest. The rocky body looks like a pepperoni pizza because of the constant, numerous eruptions on its surface.

The result may have been comparable to Jupiter's moon Io, the most volcanic body in the ... loving metals after it had already formed an iron core. Those metals settled in the mantle, making ...