X-ray aurora — southern lights — can be seen shining at Jupiter's south pole on this picture. On Jupiter the aurora behave differently at the north and south poles.
Credit:
X-ray: NASA/CXC/UCL/W.Dunn et al, Optical: South Pole: NASA/JPL-Caltech/SwRI/MSSS/Gerald Eichstädt /Seán Doran; North Pole: NASA/JPL-Caltech/SwRI/MSSS