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This space is for rent.

A Frequently Asked Question in this forum is whether or not a moon can have a moon. If this discovery is true, it would be the first known example of a natural satellite of a moon.

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www.gravitysimulator.com

A ring is not a "natural satellite"!

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Any day you wake up on "the right side of the dirt" is a good day.

T. Anderson

no, its trillions of them!

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www.gravitysimulator.com

If an asteroid can pull it off, a moon is a shoe in.

Not quite the same situation, as a free asteroid is subject to very little tide to pull its moonlets off course. Now we actually know that the destabilizing effect is not sufficient in Rhea's case to knock the moons out of orbit, at least not for a while.

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"If this were play'd upon a stage now, I could condemn it as an improbable fiction."
Shakespeare, Twelfth Night
Illuminati's Razor-The most complicatedly evil answer is usually the most correct answer. - Fazor
"Every book is a children's book if the kid can read." - Mitch Hedberg
"Distance doesn’t matter much in space, where if you just start a thing off with the right kind of shove, sooner or later it will get where you want it to go." -Frederik Pohl, Mining the Oort

More, from CNN.

Saturn has rings and is in orbit around a much more massive body (the sun). Why shouldn't it's moon enjoy the same?

By the way, there is quite a bit of debris at our own Moon's Langrangian points (mainly L4 and L5). Several thousand asteroids (the Trojan asteroids) are in orbit around the Sun-Jupiter L4/L5 points. (from Wiki): "The Saturnian moon Tethys has two smaller moons in its L4 and L5 points, Telesto and Calypso. The Saturnian moon Dione also has two Lagrangian co-orbitals, Helene at its L4 point and Polydeuces at L5."

Most of you probably know this.

But how many of you knew that Earth has a co-orbital partner with whom it exchanges orbits on a regular basis?

3753 Cruithne is an asteroid that regularly swaps orbits with our planet.

Neat, huh? That astronomical science keeps coming up with the unexpected? It keeps me interested, anyway!

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I am Mugs, of the Alien clan of Usa, Nordamerica, a Terran, of Sol.

Swaps? Exchanges?
I don't get it. From what is in the article, the only thing being exchanged is some of the energy of the orbit, and not the orbit itself.

The energy being the object of the exchange, not the orbit.

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Numbers are not case sensitive. (me)

Saw that headline yesterday. Awesome.

Enceladus stole a bit of limelight from Titan, and now Rhea's in the limelight.

And boulders aren´t, either?
(there´s another thread on this Rhea topic)

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If everyone had even a basic grasp of scientific principles, this planet would be a better place (Phil Plait)

Die Lücke, die wir hinterlassen, ersetzt uns vollkommen (Carl Heinz Schroth)

Would it ruin my geek cred if I said my first thought on seeing the title was "how can you put rings around a rhea?"

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"Illuminati's Razor - The most complicatedly evil answer is usually the most correct answer."
-- Fazor

It could be worse... you could have thought it meant putting a ring on Rhea.

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Numbers are not case sensitive. (me)