Saturn's 'Invisible' Ring Is Much Bigger Than Scientists Thought

Astronomers were stunned in 2009 when they discovered a gargantuan, never-before-seen eighth ring around Saturn. The "Phoebe ring," as it was dubbed, lies far outside the planet's seven main ring groups and is made of dark particles that make it hard to spot except in infrared light.
Read more: http://ift.tt/1Mz7Kzl