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

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

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 ...

Io, the innermost of Jupiter's four largest moons, is slightly bigger than Earth's moon.Io is the most volcanically active body in the solar system, bursting with plumes that rise up to more than ...

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.

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 ...

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 sets record after 12 new moons discovered 00:14. A NASA spacecraft made its closest-ever approach to Jupiter's moon Io, coming within 930 miles of the "surface of the most volcanic world ...

The Juno probe, which has been orbiting Jupiter since July 2016, is set to conduct a flyby of Io, one of the 80 known moons in Jupiter’s system. Io’s magma-encrusted surface is pockmarked with ...

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 ...

And the only way that makes sense, and fits with preexisting models of the evolution of Jupiter and its inner moons, is that Io has been erupting for perhaps as long as 4.5 billion years.

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 ...