Jupiter’s Moon Io has Dunes!

Dunes observed on Io may be caused hot lava mixing with subsurface sulfur dioxide which then vents and causes grain movement on the surface.

IMAGE: Potential dunes on Jupiter’s moon Io. An analysis indicates that the dark material (lower left) is recently emplaced lava flows, while the repeated, line-like features dominating the image are potential dunes. The bright, white areas may be newly emplaced grains as the lava flows vaporize adjacent frost. CREDIT: NASA/JPL-Caltech/Rutgers

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Beth Johnson

Planetary scientist, podcast host. Communication specialist for SETI Institute and Planetary Science Institute. Buy me a coffee: https://ko-fi.com/planetarypan