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By enhancing contrast and teasing out previously hidden information in images taken by the Voyager-2 spacecraft, LPL scientist Erich Karkoschka discovered that Uranus' southern hemisphere is anything but bland. (Image: Erich Karkoschka) By enhancing contrast and teasing out previously hidden information in images taken by the Voyager-2 spacecraft, LPL scientist Erich Karkoschka discovered that Uranus' southern hemisphere is anything but bland.