The large black space is the Cassini division, dividing A and B rings.                                                                                   

      One of Saturn’s nicknames is Lord of the Rings.  That is because there are about 1,000 rings surrounding Saturn.  Even though Saturn is not the only planet with rings, Saturn has the most.  It was once thought that the rings were a squished moon.  Now we know otherwise.  The invisible force of gravity around Saturn pulls pieces of rock and ice close to the planet. The rings get very close to Saturn, and go about 150,000 miles (175,000 km) into space, yet they are still kept within Saturn’s gravity reach.  Some of the ice particles in Saturn’s rings are bigger than a house.  If you look at the rings up close, they look like the grooves on a phonograph.  Saturn's rings are 597,000 miles (693,000 km) in diameter  (20 times the diameter of Earth), and 0.6 miles (0.700 km) thick.  Because the rings are so thin, when you look at them from the side, they almost disappear.  There are seven main rings.  Rings A, B, and C are easily visible from Earth.  A and B are quite easy to see, but C is not as easily viewed.