ICEINSPACE
Moon Phase
CURRENT MOON
Waxing Gibbous 80.5%
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08-10-2009, 06:39 AM
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amateur
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Join Date: Jul 2006
Location: Mt Waverley, VIC
Posts: 6,940
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More rings around Saturn
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08-10-2009, 06:45 AM
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Registered User
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Join Date: Jan 2009
Location: Glenhaven
Posts: 4,161
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Fred Watson was talking about it on Adam Spenser's show.
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08-10-2009, 03:43 PM
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Registered User
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Join Date: Feb 2009
Location: Blue Mountains, Australia
Posts: 1,333
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Presumably, something collided with Phoebe which caused its rather angled orbit and it is Phoebe's gravitational drag which has resulted in the ring. Iapetus (size ~1500 km) and Phoebe (size ~220 km) are the largest of the outer moons but Phoebe is nearly 4 times further out.
Regards, Rob.
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08-10-2009, 03:48 PM
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star-hopper
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Join Date: Jun 2005
Location: Terranora
Posts: 4,318
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08-10-2009, 04:02 PM
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Registered User
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Join Date: Feb 2009
Location: Blue Mountains, Australia
Posts: 1,333
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Thanks Glen,
So, it looks like the wanderer Phoebe was captured by Saturn, due to its retrograde angled orbit. The dust is due to one or perhaps multiple smaller impacts with the moon.
Regards, Rob.
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08-10-2009, 07:25 PM
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Registered User
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Join Date: Oct 2006
Location: Walcha , NSW
Posts: 1,652
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Quote:
Originally Posted by Robh
Thanks Glen,
So, it looks like the wanderer Phoebe was captured by Saturn, due to its retrograde angled orbit. The dust is due to one or perhaps multiple smaller impacts with the moon.
Regards, Rob.
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Dont rule out outgassing from old cryo-geysers!
I guess ANYTHING is possible!
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