In this view, north is to the top, and the sun illuminates the surface from the lower left about 58 degrees above the horizon. Detail of the furrowed region of Galileo Regio View of the Galileo Regio region on Ganymede showing fine details of the Galileo image fit into the larger scale, but much lower resolution view of the region taken 17 years earlier by Voyager. The broad curved furrow patterns are characteristic of the darker regions of this moon. North is to the top of the picture and the sun illuminates the surface from almost overhead in the Galileo picture. Detail of Uruk Sulcus View of a portion of the Uruk Sulcus region on Ganymede showing how the fine details of the grooved terrain that are the principal features in the brighter regions of this satellite relate to the global view of the moon.
North is to the top of the inset picture and the sun illumination is almost overhead.
The global view is a Voyager picture taken in 1979. Detail and context of Galileo Uruk Sulcus pictures View of the region of Ganymede's Uruk Sulcus placed on a lower resolution Voyager view taken 17 years earlier. North is to the top of the picture and the sun illuminates the surface from almost overhead in the Galileo view. The finest details that can discerned in the Galileo picture are about 80 meters across. The four boxes outlined in white show the extent of Galileo's initial look at this area.