Io from New Horizons (exposure time: 75 milliseconds)
A long-exposure image of Io taken on 26 February 2007 during New Horizons' Jupiter flyby. Sunlight on the dayside of Io has saturated the New Horizons LORRI camera's detector, causing the streaking across the photo. But the long exposure reveals lovely structures in the umbrella-shaped plume of the actively erupting volcano Tvashtar. Two or more other plumes are visible on the night side of Io.