These images were obtained by the Galileo spacecraft on its eighth orbit around Jupiter at a distance of 48,000 km from Callisto. This crater is characterized by a bright circular area surrounded by a darker material excavated and ejected by the impact. Beyond this is a zone of rays which are oriented radially outward and contain material also thrown from the crater. Fewer smaller impact craters are visible in the ejecta blanket surrounding the large crater than in the areas more distant from the crater. This lack of craters superposed on the ejecta blanket and on the crater itself, together with the brightness of the central zone, is evidence that the large crater is a relatively young feature on Callisto.
North is to the top of the mosaic with the sun illuminating the surface from the left.
This image of the south polar region of the Jovian satellite Callisto was taken in twilight by the Galileo spacecraft on its eighth orbit around Jupiter. Note that many of the craters are not as sharp in appearance as the two large craters near the bottom of the image. This is an indication that some process has eroded the craters since their formation. North is toward the top of the image. Callisto Asgard C allisto is the most distant of the four large moons of Jupiter.