One of the big surprises: Despite the moon's cooled crust, the data shows Io maintains liquid hot lava just below the ground.

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 ...

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

NASA's Juno spacecraft made a close flyby of Jupiter moon lo. See an animation of the images the probe captured created by ...

NASA’s Juno mission has unveiled new insights into Jupiter’s fierce winds, cyclones, and volcanic activity on its moon, Io.

A flurry of new discoveries from NASA's Juno mission Jupiter have taken us beneath the surface of the gas giant's volcanic ...

Scott Bolton’s first encounter with Io took place in the summer of 1980, right after he graduated from college and started a job at NASA. The Voyager 1 spacecraft had flown past this moon of Jupiter, ...

The crescent moon is sure to make for a lovely, if fleeting, sight on the night of April 29, when it will be visible for just ...

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 ...

A celestial leap is set to take place over two nights as the moon and Jupiter will appear to dance near to each other in the ...

Glimpses of a Volcanic World: New Telescope Images of Jupiter's Moon Io Rival Those from Spacecraft May 30, 2024 — Combining a new imaging instrument with the powerful adaptive optics ...