Giant Jupiter is half illuminated by the Sun and its moon Io is a crescent in the foreground. A small glowing volcanic plume is erupting from Io.

Jupiter and Io

This is a montage of New Horizons images of Jupiter and its volcanic moon Io, taken during the spacecraft's Jupiter flyby in early 2007.

Credits: NASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute/Goddard Space Flight Center
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Image CreditNASA/Johns Hopkins University Applied Physics Laboratory/Southwest Research Institute/Goddard Space Flight Center
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