Space is a very big place, and as such, it's full of mysteries that scientists can't explain. Some of this is simply because it's impossible to fully observe, thanks to its sheer size and the ...

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

NASA's Juno spacecam has once again captured a series of breathtaking photos of Io, Jupiter's volcanic moon.

NASA’s Juno spacecraft has completed its first ultra-close flyby of the hellish moon Io. The spacecraft has been orbiting our solar system’s gas giant, Jupiter, … ...

New infrared images showcase "fire-breathing" lakes all across the surface of Jupiter's volcanic moon Io.

Use precise geolocation data and actively scan device characteristics for identification. This is done to store and access ...

NASA's Juno mission might have originally been all about Jupiter, but its extended mission has the spacecraft observing the gas giant's moons — and it's making some pretty interesting discoveries. Its ...

New images of Jupiter's volcano-studded moon Io, taken by the Large Binocular Telescope on Mount Graham in Arizona, offer the highest resolution of Io ever achieved with an Earth-based instrument ...

New research is revealing the secrets of Io, the mysterious volcanic moon of Jupiter. Four centuries after Galileo discovered Io in 1610, NASA sent a spacecraft called Juno on a five-year mission ...

Images from NASA's Juno probe have revealed some surprising details about Io's tortured volcanic surface.

Io: New image of a lake of fire, signs of permanent volcanism Juno captures images of Io's violence as study says it has always been that way.

Jupiter’s Moon Io Is Alive With Volcanic Activity, Despite Its Initial ‘Dead Moon’ Image Signs of volcanoes abound in new images of Io, the most active moon in our solar system. But the moon wasn’t ...