The hellish surface of a moon of Jupiter known as Io is riddled with hundreds of lava-spewing volcanoes that make the world one of chaos and violence. The brutal conditions also make Io intriguing to ...

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Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. An image of Jupiter and Io as seen by NASA's Juno on August ...

Astronomers at The Johns Hopkins University, the Observatoire de Paris, and other institutions have solved a nearly 30-year-old mystery surrounding Jupiter’s moon Io, showing that volcanoes there ...

NASA is taking space enthusiasts on an unprecedented expedition to a volcanic world situated amid the vast expanse of our universe. The Juno mission launched on August 5, 2011, and entered into ...

NASA's Juno spacecraft began its scientific operations looping around the gas giant Jupiter, providing the most stunning images yet of the solar system's largest planet. But that was in 2016—Juno is ...

A 4-billion-year-old volcano? New research finds that Io, the solar system’s most volcanically active moon, can brag just that. A recent study of Io’s sulfurous atmosphere suggests that Jupiter’s moon ...

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," and the space agency released new images of the flyby. The ...