Scientists with NASA's Juno mission to Jupiter have discovered that the volcanoes on Jupiter's moon Io are each likely powered by their own chamber of roiling hot magma rather than an ocean of magma.
Earlier, after Io's volcanic activity was discovered in 1979, scientists thought that the moon has a global magma ocean. But Juno, from its close flybys in December 2023 and February 2024 has helped ...
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