14 DAY TRIAL // Saturn's rings are the planet's most distinctive feature and the thing that make it one of the most beautiful in the solar system.
Yet, the rings are still a source of mystery, most people don't even realize how many there are.
The Cassini spacecraft, which has been orbiting Saturn for a decade now, has sent back some interesting shots of Saturn's dark D ring.
"The Cassini spacecraft has captured some of the structure of the tenuous ring, appearing here as light/dark banding in the upper-right of the image. (The brightest ring material, in the lower-left here, is the C ring.)," NASA explained.
"This banding, which is distinct from the vertical warping pattern Cassini scientists are monitoring (see A Twisted Tale), remains something of a mystery to scientists," it added.
The D ring is the smallest and the innermost ring, just a few thousand kilometers above Saturn's clouds. Astronomers didn't even realize it existed until they had probes get close to the planet.