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Jupiter's aurora up close Auroras around Jupiter's north pole, imaged in the ultraviolet by the NASA/ESA Hubble Space Telescope. A main ring is visible along with diffuse glows within it, as well as bright spots caused by magnetic connections to some of the planet's moons. The spot to the far left corresponds to Io, and the spots below the main ring corresponds to Ganymede (on the left) and Europa (on the right), respectively. NASA, ESA & John T. Clarke (Univ. of Michigan)