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

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 ...

In March and April 2025, internet users shared a striking image that they claimed showed "Steeple Mountain," a massive point of interest on Jupiter's moon Io. For example, one X u ...

"Io stands out as the most volcanically active body in our solar system, boasting hundreds of active volcanoes that emit plumes of gas and dust reaching heights of up to 400 km [250 miles] and ...

An curved arrow pointing right. The surface of Io, one of Jupiter's many moons, is an especially hostile environment – even for space. Scientists recently observed its atmosphere completely ...

The one member of our Solar System that surpasses Earth in volcanic vitality is Io, Jupiter’s innermost moon. Containing around 400 powerful volcanoes, Io is influenced by Jupiter’s gravitational pull ...

On Oct. 24, JMA issued a warning for small eruptions within about 1km of Mount Io. Volcanic tremors and land swellings had been observed around the area since the end of 2013. Japan Meteorological ...

The moon is hostile. A newly found cave could be a lifesaver. Jupiter’s volcanic moon Io has been erupting for billions of years Jupiter’s volcanic moon Io has been erupting for billions of ...

Two very close recent flybys of Io by the Juno spacecraft have revealed more detail about the most volcanic world in the solar system - Jupiter's mysterious moon, Io. Nasa has released a new ...

What can a sample return mission from Jupiter's volcanic moon, Io, teach scientists about planetary and satellite (moon) formation and evolution? This is what a recent study presented at the 56th ...

On Oct. 24, JMA issued a warning for small eruptions within about 1km of Mount Io. Volcanic tremors and land swellings had been observed around the area since the end of 2013. Japan Meteorological ...