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NASA's Juno Unveils Io's Surprising Volcanic Heat Secrets
11/9/2025
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Story summary
- NASA's Juno spacecraft reveals Io emits far more heat than previously estimated.
- Researchers led by Federico Tosi find Io's volcanoes have hot outer rings and cooler centers.
- This configuration raises Io's total heat output, challenging earlier volcanic theories.
- Scientists cannot confirm a global magma ocean from current data, and future missions may vary in detail.
