The limb of Saturn appears bright as Cassini peers through several of the planet's rings.
The curvature of the planet can be seen on the bright left half of the image. From top to bottom are the C, B and A rings. The odd appearance of the rings as they cross the limb down the middle of the image is an optical illusion caused by the brightly reflective planet and the darkness of space as seen through rings which have varying densities of particles.
CICLOPS: Saturn Bright Through Rings
CICLOPS: Saturn Bright Through Rings
[img]http://ciclops.org/media/ir/2009/6 ... /b][/size]