Juno's Microwave Radiometer (MWR) was built peer deep down into Jupiter's massive atmosphere. But during the spacecraft's extended mission, it's been studying the Galilean moons. During two flybys of volcanic Io, the spacecraft its MWR to measure the heat flowing from deep within the moon.
Juno Measures the Heat Below Io's Restless Surface
By system
July 24, 2026 •
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Original source:
Universe Today
