Against a pitch-black background, a giant sphere covered in alternating horizontal bands of pale orange and light bluish-gray fills two-thirds of the image, and extends beyond the frame to the upper right. An orange swirl, the shape of an eye, is at its center. A much smaller sphere – less than a tenth the size of just the orange swirl – is at center left, in shades of orange, gray and blue.

Jupiter Eye to Io

This image of Jupiter and its moon Io, at left, was taken by NASA's Cassini spacecraft on Dec. 1, 2000. It shows details of Jupiter's Great Red Spot and other features that were not visible in images taken earlier, when Cassini was farther from the planet.

Credits: NASA/JPL/University of Arizona