Difference on the Dark Side

Saturn A ring displays a marked asymmetry in brightness between the region nearer to the Cassini spacecraft and the region farther from it. The A ring is the broad, bright section of the rings outside of the dark B 
ring

Saturn A ring displays a marked asymmetry in brightness between the region nearer to the Cassini spacecraft and the region farther from it. The A ring is the broad, bright section of the rings outside of the dark B ring