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

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 ...

Thanks to the Juno probe mission, a mystery about Jupiter's moon Io that lasted over 40 years has been solved. It is now known why Io is the most volcanically active body in the Solar System.

Or perhaps more likely, look at under a microscope. The latest candidate for hosting nearby life is Jupiter’s moon, Io. Let’s take a look at what makes Io special, and what we might hope to ...

Therefore, what are the next steps for making an Io plume sample return ... In Io's case, Jupiter's intense gravity tugs on the much smaller moon as the latter orbits in an elliptical (oval ...

NASA scientists have reestablished communications with the Juno spacecraft following the probe sliding into safe mode on April 4.

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 ...

Io is the closest moon to Jupiter and is one of the most inhospitable places imaginable. Earth's moon, by comparison, is the fifth-largest moon and is nearly the same size as Io. Here's a chart of ...

For instance, the Hubble Space Telescope entered safe mode relatively recently as scientists worked on remedying some ...

Launched in 1989, the $1.4 billion robot ship has spotted an asteroid with a moon, a comet striking Jupiter and dozens of molten cauldrons on Io, the most volcanic body in the solar system.

Despite these challenges, Juno performed as designed and is now preparing for its next close approach to Jupiter on May 7, which will include a flyby of the Jovian moon, Io.