Artistic views of the ultraviolet aurorae on Ganymede (IMAGE)

University of Liège

Artistic views of the ultraviolet aurorae on Ganymede

Caption

Artistic views of the ultraviolet aurorae on Ganymede, based on Juno’s close-up observations from 7th July 2021. As Juno flew by Ganymede at high speed, its UV spectrograph could only acquire narrow strips, combined here to display the overall shape of the aurora (left). However, when zooming on individual strips (right), it becomes apparent that that this aurora is formed of a chain of patches rather than a uniform curtain. Similar auroral forms have been observed at Earth, as well as on other planets such as Jupiter or Saturn, suggesting that universal processes are at play.

Credit

NASA/JPL-Caltech/SwRI/UVS/ULiège/Gusbin/Bonfond

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