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Images of Jupiter's moon Thebe from Galileo Thebe, with a mean diameter of about 100 kilometers, is the second largest of Jupiter's small inner moons. These are all of the images that Galileo obtained of it. The closest view (third column, middle row) has a resolution of 2 km/pixel, although this image is incredibly noisy, rendering an effective resolution somewhat poorer. NASA / JPL / Ted Stryk