Using the NIRSpec data, planetary scientists measured the physical properties of the auroral footprints of Jupiter’s two innermost Galilean moons, Io and Europa, including the local temperature and ionospheric density, in the near-infrared. The NASA/ESA/CSA James Webb Space Telescope conducted a clockwise scan around the entire limb of Jupiter, chasing aurora as it rotated into view. This dynamic phenomenon is a result of charged particles traveling down magnetic field lines, crashing i... [5168 chars]
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