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 ...

No moon in our solar system is likely as chaotic as Io, Jupiter’s third largest. The rocky body looks like a pepperoni pizza because of the constant, numerous eruptions on its surface.

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

Jupiter's moon Io is the most volcanically active body in our Solar System, with around 400 volcanoes and extensive lava flows spread across its surface – but contrary to what scientists thought ...

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 ...

and Winter Maker Moon. Check the forecast here! Skywatchers can also look for Jupiter on Dec. 14. It will be positioned between the nearly full moon and Aldebaran, which is the brightest star in the ...