Discovered by Galileo in 1610, Io has since become one of the most fascinating objects in planetary science. Orbiting just ...

There are new, high-quality images of ... moon's volcanoes. "We are looking for how often they erupt, how bright and hot they are, how the shape of the lava flow changes, and how Io's activity ...

and how the shape of the lava flow changes. The JunoCam instrument aboard our #JunoMission acquired six images of Jupiter's moon Io during its close encounter today. This black-and-white view was ...

On March 9, 1979, Linda Morabito discovered a volcanic plume on Io, a moon of Jupiter, in one of the photos ... Towering mountains, in the shape of tilted blocks and more than twice as tall ...

and if the shape of the lava flow changes." NASA estimates that there are hundreds of actively erupting volcanoes over the surface of Io, the third largest moon of Jupiter, and the fifth from the ...

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Jupiter wasn’t always the planet we know today—it was once twice as big, had a magnetic field 50 times stronger, and its ...

The changing amount of Jupiter's gravity felt by Io results in rock tides on the moon, and Io's shape is compressed and stretched out every orbit, which lasts only 1.8 Earth days. This generates ...

Jupiter may have once been more than twice its current size, with a magnetic field 50 times stronger, say scientists who ...

The Voyager 1 spacecraft had flown past this moon of Jupiter, catching the first glimpse of active volcanism on a world other than Earth. Umbrella-shaped outbursts of magmatic matter rocketed into ...

As the moons travel around the planet they pull on each other gravitationally in such a way that their path is elliptical, or egg-shaped. This means Io's orbit moves towards Jupiter and out again.