Ever wonder how Saturn gets its rings?
Its roche limit. Saturn has so much mass that the gravitational pull can be strong enough to rip something apart if it gets too close.
Since the strength of gravity gets exponentially stronger the closer you get to something, the gravity pulling on say, an asteroid, as it gets close would be much higher on the front side of the asteroid then it is on the back. This starts the separation and can pull it in half.
The torn remains of objects that have entered the roche limit of saturn float around it in fine and gorgeous rings, a warning for the rest cosmos to think twice before approaching.
(Source: planned-planethood, via whathashectoreverdonetome-blog)