This composite was produced from images returned Friday, Jan. 14, 2005, by ESA's Huygens probe during its successful descent to land on Titan. It shows the boundary between the lighter-coloured uplifted terrain, marked with what appear to be drainage channels, and darker lower areas. These images were taken from an altitude of about 8 kilometres and a resolution of about 20 metres per pixel. (AP Photo/ESA/NASA (news - web sites)/University of Arizona)
