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

As bristling with volcanoes as a porcupine with quills, Jupiter's moon Io is the most volcanically active world in the Solar System. At any given time, around 150 of the 400 or so active volcanoes ...

Lava lakes on Io's surface had previously been found in a few locations, such as the 127-mile-long lake Loki Patera. This study reveals that these lakes are extremely common on the moon, and the ...

NASA's Juno mission has gathered new findings after peering below Jupiter's cloud-covered atmosphere and the surface of its fiery moon, Io. Not only has the data helped develop a new model to ...

The agency has scheduled another close flyby of Io for Feb. 3, when Juno is again expected to pass at about the same distance from the moon's surface as it did Saturday. Juno's mission is set to ...

Io’s surface is peppered with volcanoes and lava lakes. Here, NASA’s Galileo spacecraft captured an image of Io in the midst of a volcanic eruption. (Image credit: NASA/JPL/DLR) ...

The surface temperature is a frigid 250 degrees below zero Fahrenheit, but Io’s volcanic eruptions produce extremely hot lavas that could be as high as 3,000 degrees (much hotter than we see ...

Observations made of Jupiter’s moon Io during the Juno mission’s flybys helped astronomers confirm how and why Io became the most volcanic world in the solar system.

The volcanic surface of Jupiter's huge moon Io got a stunning close-up thanks to NASA's Juno mission. When you purchase through links on our site, we may earn an affiliate commission. Here’s how ...

The volcanic moon, which orbits the gas giant Jupiter, has long been written off as a possible home for alien life, as its extreme temperature and lava-covered surface make it wholly inhabitable ...

Together, the observations point to a rigid, mostly solid interior beneath Io’s surface, rather than a global magma ocean — solving a 45-year mystery started by Voyager 1’s observations.

Observations made of Jupiter’s moon Io during the Juno mission’s flybys helped astronomers confirm how and why Io became the most volcanic world in the solar system.