LOS ANGELES - Saturn's majestic ring system, visible through backyard telescopes, just got a little more crowded with the discovery of a faint, new ring encircling the giant planet, scientists said Tuesday. The international Cassini spacecraft beamed back images this week showing the new ring, located inside the outermost E ring. The new ring crosses the orbits of the Saturn moons Janus and Epimetheus, leading scientists to believe tiny particles from the lunar surfaces gave rise to the ring. Saturn has seven major rings named A through G, although they are not arrayed in alphabetical order. The planet has about...