While Io, the most volcanically active moon in the solar system, appears completely dry and devoid of water ice, its neighbor ...

Research into Jupiter’s moons shows Io and Europa did not evolve apart but formed with opposite compositions from the ...

Io, one of the four Galilean moons of Jupiter, as seen by the Galileo probe, circa 1997. (Photo by Space Frontiers/Hulton Archive/Getty Images) New data from NASA’s $1.2 billion Juno spacecraft — now ...

The moon spent a few million years as a volcanic wasteland, covered with ongoing eruptions that spewed from mountains and even from the ground itself. New research suggests that the moon's orbit could ...

Looking for a sky event this week? Check out our full Sky This Week column. January 11: Psyche moves north of Aldebaran Io ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. Jupiter’s moon Io is the most volcanically active world in the solar system. This high-resolution ...

Jupiter’s volcanic moon has always felt like a place that tests your sense of what a world can be. Its surface glows with hundreds of active hot spots. Its mountains rise higher than Everest. Its lava ...

Jupiter’s moon Io, the most volcanically active body in the solar system, is littered with hundreds of erupting volcanoes. High-resolution images now reveal several dozen lava lakes, researchers ...

While Io, the most volcanically active moon in the solar system, appears completely dry and devoid of water ice, its neighbor ...