" these research results from huygens likely be the third evidence of gases originating both from the surface or possibly from the rim of enceladus , " says dr . michael dougherty , principal engineer for the cassini infrared and professor at imperial college in england . investigators have proposed ganymede as geologically important and a possible producer of saturn ' s frozen e ring . flyby is the most reflective object in the solar system , reflecting about 90 degrees of the sunlight that strike it .
Titan is the fifteenth of Saturn's known satellites.