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Author Topic: Saturn Moon Rhea Sports Rings  (Read 2190 times)
Pyperlie
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« Topic Start: March 11, 2008, 12:51:50 pm »


Saturn Moon Rhea Sports Rings

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March 7, 2008 -- Of the many surprises unearthed at Saturn during the ongoing survey by the Cassini science probe, few rival the delightful find that Rhea, one of the ringed planet's larger moons, has an entourage in orbit all its own.

Saturn is not the only planet to have rings. All the large, gaseous worlds of the outer solar system have them, though none are as bold and intricate as Saturn's bands. But for the first time, scientists have evidence that rings of debris, dust and other small particles can gather in orbit around a moon, not just a planet.

Cool, huh?  Cool
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« Reply #1: March 11, 2008, 04:12:50 pm »

Cool, huh?  Cool

That is cool.  I've wondered whether that was possible or if the large gravity well of the planet would pull the moon's orbiting objects away.  I guess, now that I think of it, it's not much different than what's happened with the sun/planets/moons we're just looking at the same dynamic on a smaller scale.

Neat, now I have a real world model to point to when I create something like this for an RPG scenario.
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« Reply #2: March 11, 2008, 05:45:48 pm »

That is cool.  I've wondered whether that was possible or if the large gravity well of the planet would pull the moon's orbiting objects away.

I suspect a moon would only be able to keep rings if it was fairly massive and not very deep in its planet's gravity well.
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« Reply #3: March 12, 2008, 11:32:34 am »


I suspect a moon would only be able to keep rings if it was fairly massive and not very deep in its planet's gravity well.

I assume it'll lose them eventually, just like Saturn will lose it's own rings, but it's neat that it's possible even for a little (in cosmic terms) while.  Smiley
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"Is no one inspired by our present picture of the universe? Our poets do not write about it; our artists do not try to portray this remarkable thing. The value of science remains unsung by singers: you are reduced to hearing not a song or poem, but an evening lecture about it. This is not yet a scientific age."
              -----Richard Feynman

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« Reply #4: May 03, 2008, 10:16:29 pm »

I suspect a moon would only be able to keep rings if it was fairly massive and not very deep in its planet's gravity well.

Let us not forget that this particular moon has plenty of material available (at least for now) to replenish its rings
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