WISE satellite measures girth of Saturn’s widest ring

Saturn’s largest and faintest ring, shown glowing with infrared light in an artist’s illustration, extends just over 16 million kilometers from the planet.
JPL-Caltech/NASA, Keck
Saturn’s largest and faintest ring, shown glowing with infrared light in an artist’s illustration, extends just over 16 million kilometers from the planet.
JPL-Caltech/NASA, Keck