Juno uncovers Io's buried heat, hinting at lava flows or rapid subsurface conduction
TL;DR
NASA’s Juno spacecraft, using its Microwave Radiometer, measured Io’s subsurface temperatures for the first time and found a sharp, 40+ degree Fahrenheit rise within feet of the surface. The results from two close flybys (2023–2024) suggest heat moving through Io’s crust by conduction or stemming from buried lava flows, offering a new way to study tidal heating and heat transport on rocky worlds and potentially informing heat dynamics on other moons.
- NASA’s Juno spacecraft finds temperatures surging just below Io’s volcanic surface thebrighterside.news
- Juno measures fiery Io’s subsurface temperature for 1st time EarthSky
- NASA measures the fiery heat inside Jupiter's volcanic moon Io Earth.com
- SwRI scientist announces first direct temperature measurements beneath Io’s surface Texas Public Radio | TPR
- APOD: 2001 July 15 - Io in True Color NASA Science (.gov)
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