In 1979, NASA Jet Propulsion Laboratory (JPL) scientist Linda Morabito discovered volcanic activity on Jupiter’s innermost moon, Io. But Io isn’t just volcanically active—it is the most ...

The discovery solves a 44-year-old mystery of why, and how, Jupiter's violent moon, Io, became so volcanically active. Io is only slightly larger than our moon, with a diameter of 2,237 miles ...

In the entire Solar System, the most volcanic celestial body is Jupiter's moon Io. Extensive lava flows on this moon and is spread across its surface. There are nearly 400 volcanoes on it.

When you buy through links on our articles, Future and its syndication partners may earn a commission. Credit: (left) NASA/JPL-Caltech/SwRI/MSSS Image processing by Emma Wälimäki; (inset) NASA ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. Jupiter's volcanic moon Io doesn't appear to have a subsurface ocean of magma, resolving some ...

The planet is so large that it outweighs the collective mass of all of ... lot of force on a tiny moon around it. “Basically, Jupiter is squeezing the insides out of Io,” said Bolton ...

NASA's Juno mission revealed that Jupiter's moon, Io, the most volcanic body in our solar system, doesn't possess a global magma ocean. Instead, separate magma chambers fuel its over 400 active ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. The Juno mission ...

indicate that volcanic activity on Jupiter's second smallest moon is unlikely to be sourced from a magma ocean just below the surface. The findings may prompt a rethink about Io's interior as well ...

On this date, Jan. 7, 1610, astronomer Galileo Galilei, with a homemade telescope, noticed three points of light near Jupiter. Initially believing they were distant stars, Galileo’s repeated ...