You’ve seen the frowning face on Jupiter, now check out new images of Io captured by NASA’s Juno spacecraft during its closest flyby yet. It came within roughly 930 miles from the surface of the most volcanic world in our solar system.
By combining data from this most recent flyby with previous observations, NASA’s Juno science team are now able to study how Io’s volcanoes vary. More specifically, they want to know how often they erupt, their brightness, temperature, the varying shapes of lava flows, and how Io’s activity is connected to the flow of charged particles in Jupiter’s magnetosphere.
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This JunoCam image of Jupiter’s moon Io captures a plume of material ejected from the (unseen) volcano Prometheus. Indicated by the red arrow, the plume is just visible in the darkness below the terminator (the line dividing day and night),” said NASA.