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Tvashtar Paterae from Galileo Orbit I27 This mosaic of images from the Galileo Solid-State Imaging Experiment (SSI), acquired during the I27 orbit on February 22, 2000, covers the Tvashtar Paterae volcano on Io. The higher resolution images covering the volcano have been processed with a high-pass filter and color balanced, and overlain atop lower resolution images for context. NASA / JPL / Ricardo Nunes