Juno

An artist's impression shows the internal structure of Jupiter's moon Io. Data from NASA's Juno spacecraft indicate that Io does not have a shallow global magma ocean, and is consistent with a mostly solid mantle (shown in green), with significant molten material (yellow and orange), above a liquid core (red/black). Credit: NASA/Caltech-JPL/SwRI, edited

Juno's amazing discovery: Io's face is not what we expected

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Juno spacecraft data suggests Io's controversial magma ocean may not exist
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