This image shows the first flash of sunlight reflected off a lake on Saturn's moon Titan. The glint off a mirror-like surface is known as a specular reflection. This kind of glint was detected by the visual and infrared mapping spectrometer. It confirmed the presence of liquid in the moon's northern hemisphere, where lakes are more numerous and larger than those in the southern hemisphere. Scientists had confirmed the presence of liquid in Ontario Lacus, the largest lake in the southern hemisphere. This mosaic from NASA’s Cassini mission shows the most complete view yet of Titan’s northern land of lakes and seas.