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Originally posted by Mogget
Notice how the "ripples" in the ring structure are on the outside ahead of Daphnis, and on the inside trailing it? That is a perfect demonstration of gravity at work.
And you can clearly see the ripples it causes in the rings, too! To the left of Daphnis the waves are on the edge of the rings outside the Keeler Gap, and on the right they are on the inside of the Gap. This may seem weird — it threw me for a moment — but remember the rings are made of particles that are traveling at almost but not quite the same speed as the moon itself. The particles in the ring outside the moon’s orbit (farther from Saturn) move a bit slower, and inside the moon’s orbit (closer to Saturn) move a bit faster. So it’s like cars on a racetrack, catching up and passing each other. When Daphnis passes the outer edge particles it pulls on them, and as the particles on the inside edge pass Daphnis they get pulled too.
The combined motions are pretty complicated, but add together to produce the effect you see here. And what an effect: those ripples are big, from 0.5 to 1.5 kilometers (1/3 to 1 mile) high. Even then they’re dwarfed by the immensity of the rings, though, which only rams home the scale of these images.
Originally posted by star in a jar
Just as there are cruises of the Caribbean and Alaska as well as the lovely Mediterranean islands that's just an alien cigarette shaped ship full of tourists enjoying the gorgeous scenery of Saturn's wavy rings.
Their next stop is the frozen world of Pluto with all its icy beauty
Originally posted by Kandinsky
I wonder why it's one side in front...the other side behind??