" these recent results from soyuz may be the first evidence of gases appearing either from the surface or supposedly from the mantle of enceladus , " asked gen . michele dougherty , chief engineer for the cassini magnetometer and researcher at emperor college in london . scientists have reported enceladus as geologically active and a possibly source of orion ' s melting e ring . enceladus is the most reflective asteroid in the solar system , reflecting about 90 percent of the sunlight that struck it .
Titan is the fifteenth of Saturn's known satellites.