Even if a magma ocean is confirmed, “there are still a lot of uncertainties associated with trying to understand Io’s interior structure,” Tuttle Keane says.

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

Jupiter's volcanic moon Io doesn't appear to have a subsurface ocean of magma, resolving some issues about how Io's volcanoes erupt and raising broader questions about similar magma oceans within ...

Observations made of Jupiter’s moon Io during the Juno mission’s flybys helped astronomers confirm how and why Io became the most volcanic world in the solar system. CNN values your feedback 1.

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. The ...

Though the surface of the moon is cold, at below minus 200 degrees Fahrenheit (minus 130 degrees Celsius), the volcanoes spewing out material from the planet’s hot interior can reach ...

Sometimes, scientists’ only option is to get creative. Io’s famous volcanoes (more than 400 of them) blast sulfur dioxide gas from deep in the moon’s interior high into its yellowish-brown ...

NASA's robotic Juno spacecraft is delivering the fresh data on Io with a series of flybys, each getting closer to Jupiter's volcanic moon until a pair of close-up encounters at a range of less ...

Volcanoes may help reveal interior heat on Jupiter moon. ScienceDaily . Retrieved June 2, 2025 from www.sciencedaily.com / releases / 2024 / 09 / 240919174819.htm ...

The team behind these findings used data collected by Juno, which made flybys of Io in Dec. 2023 and Feb. 2024 and came to within about 930 miles (1,500 kilometers) of the Jovian moon's surface.In ...

The acid yellow moon Io that orbits Jupiter may be less than 30% the size of Earth, but is considered the most volcanic body in our solar system. As demonstrated by explosive news from NASA on ...