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 ...

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 ...

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 ...

Looking for a sky event this week? Check out our full Sky This Week column. October 24: The Moon and Antares U.S. West Coast ...

An illustration shows NASA's Juno spacecraft as it makes a flyby of the Jovian moon Io. NASA's Juno mission will come closer to Jupiter's moon Io than any spacecraft has in around 20 years on Saturday ...

A NASA spacecraft is set to swing past one of Jupiter’s moons Thursday, giving astronomers a close-up view of one of the most volcanic spots in the solar system. The Juno probe, which has been ...

New secrets about Jupiter's volcanically volatile moon Io have been revealed by NASA's Juno probe. Io, Jupiter's third-largest moon, is covered in lakes made of lava, according to a new paper in the ...

A study utilizing ALMA observations of Io's atmosphere reveals a significant depletion of lighter sulfur isotopes, suggesting extensive and prolonged volcanic activity throughout its 4.57 billion-year ...

Change can be scary. Luckily, nobody is particularly close to a very big change on Jupiter’s moon Io, where a massive new volcano has been spotted in a previously flat area. The volcano has multiple ...

The volcanic world of Jupiter's moon Io can be seen in extraordinary detail in new images beamed from NASA’s Juno orbiter after its most recent flyby. Scientists hope the images will help them ...

It was many years ago now when David Bowie asked if there was life on Mars. Since then, we’ve concluded there isn’t, much to everyone’s disappointment. That left scientists the world over to start ...