sixth (and some would say prettiest) planet in the solar system. The
planet is mostly hydrogen and helium, but the rings are made of little
chunks of ice. The dark line in the rings is a gap called the Cassini
Division, swept clear of ice chunks by the periodic gravitational tugging
of a moon, Mimas, which is in orbital resonance with anything in that gap.
|L R G B color production was used to create this image.||
Minimum credit line: Bob Ferguson and Richard Desruisseau/Adam Block/NOAO/AURA/NSF (top image)
Adam Block/NOAO/AURA/NSF (bottom image)
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