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

Io's orbit cuts across Jupiter's powerful magnetic lines of force, turning Io into an electric generator. According to NASA , Io can develop 400,000 volts across itself, in turn creating 3 million ...

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

The Io–Jupiter system is similar, in scale, to an exoplanet orbiting an M-dwarf, and if volcanic Io doesn't have a magma ocean then perhaps exoplanets on close orbits around M-dwarfs don't either.

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 third-largest moon Io is the most volcanically active world in our solar system. New radio images by the ALMA telescope array show the direct effect of this volcanic activity on the ...

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 ...

When Io is closer to Jupiter on its wonky orbit, it experiences a stronger gravitational pull; when it’s more distant, the gravitational pull of Jupiter is a little weaker.

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 ...

On March 9, 1979, Linda Morabito discovered a volcanic plume on Io, a moon of Jupiter, in one of the photos from Voyager 1. She wrote, “I could feel tears begin to roll down my face at the sight ...

Io, the third-largest of Jupiter's many satellites, is just a touch bigger than Earth's moon. It orbits about as close to Jupiter, on average, as our moon does to Earth. This proximity and Jupiter ...