UA scientists using the Cassini spacecraft have spotted sunlight reflecting off a giant methane lake on Saturn's moon Titan. NASA reports that the glint is likely from a lake named Kraken Mare, that covers 150,000 square miles, which is larger than the Caspian Sea, the largest lake on Earth. [right, Cassini spacecraft image of sunlight reflecting off a methane lake on the northern part of Titan. Credit, NASA]