Jupiter's moon Io is the solar system's most volcanic body thanks to a gravitational tug of war that rages below its surface. But now scientists know the violent moon has always been this way.

Jupiter's volcanic moon Io doesn't appear to have a subsurface ocean of magma, resolving some issues about how Io's volcanoes erupt and raising broader questions about similar magma oceans within ...

Jupiter moon of Io is famed for its volcanoes. NASA just spotted the most powerful one yet Not only was the hot spot larger than Earth’s Lake Superior, but it also was seen belching out ...

Jupiter's moon Io is a volcanic hellscape—and has been since the solar system began. Io is the most volcanic body known to science, and researchers have puzzled over its history for years.

Because Io is so close to its massive host planet, the moon is subjected to a tremendous gravitational pull as it orbits ...

NASA's robotic Juno spacecraft is delivering the fresh data on Io with a series of flybys, each getting closer to Jupiter's volcanic moon until a pair of close-up encounters at a range of less ...

The study, published in Science, indicates that for most of — or possibly all — its 4.57 billion years of existence, Io has been an angry world. As Jupiter’s innermost large moon, it is ...

NASA’s Juno spacecraft photographed Jupiter's moon Io during an Oct. 15 flyby, showing its tortured, volcanically-active surface.

Jupiter’s moon Io, dotted with hundreds of volcanoes, set for a close-up. NASA's Juno probe will do 9 flybys of the moon as scientists look to understand more about its volcanic activity.

The mutilated surface of Jupiter’s moon Io was revealed in great detail by the Juno spacecraft, which has been exploring the Jovian system since 2016 and recently pulled off the closest flyby of ...

There are new, high-quality images of Jupiter's moon, Io, thanks to the nearest flyby of the celestial body by a spacecraft in decades.. NASA released images Saturday taken by the Juno spacecraft ...