SMRTR Science & EngineeringApr 27, 2025Quanta Magazine

What’s Going On Inside Io, Jupiter’s Volcanic Moon?

SMRTR summary

NASA's Juno spacecraft has revealed that Io, Jupiter's volcanic moon, does not have a shallow magma ocean as previously thought. This discovery challenges existing theories about Io's internal structure and raises questions about how tidal heating works on moons throughout the solar system. The findings may have implications for understanding potential subsurface oceans on other moons like Europa.

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