When Saturn's rings were discovered, early theoretical work proceeded on the assumption that an equilibrium was established between dust lost and dust gained. This implied that the ring's structure was essentially static. Later observations have showed that Saturn's rings are changing and these latest observations from Uranus make that a more general finding. More detailed models that don't make the equilibrium assumption also indicate that rings are dynamic structures that change on relatively short time scales... and these observations lend more support to these models... the only other edge-on pictures of Uranus' rings were taken by Voyager 2. In addition, most of the comparison data for gauging changes in the ring structures of both Saturn and Uranus use Voyager 2's pictures as their starting point. I don't think the people who conceived the Voyager probes ever imagined that Earth based telescopes would be able to obtain the sort of detail they are now obtaining. -- Chris Lee, Arstechnica
1 posted on
08/28/2007 10:57:58 AM PDT by
SunkenCiv
To: 75thOVI; AFPhys; Alice in Wonderland; AndrewC; aristotleman; Avoiding_Sulla; BenLurkin; Berosus; ...
2 posted on
08/28/2007 10:58:27 AM PDT by
SunkenCiv
(Profile updated Sunday, August 26, 2007. https://secure.freerepublic.com/donate/)
To: SunkenCiv
4 posted on
08/28/2007 11:02:04 AM PDT by
dfwgator
(The University of Florida - Still Championship U)
To: Monkey Face; dfwgator; ladtx
6 posted on
08/28/2007 11:10:19 AM PDT by
SunkenCiv
(Profile updated Sunday, August 26, 2007. https://secure.freerepublic.com/donate/)
7 posted on
08/28/2007 11:12:21 AM PDT by
SunkenCiv
(Profile updated Sunday, August 26, 2007. https://secure.freerepublic.com/donate/)
To: SunkenCiv
Well, dang it, with a title like that how does anyone expect us superannuated adolescents to resist?
Not me. Not this time. Must...resist...temptation...
To: SunkenCiv
The rings of Uranus are oriented edge-on to Earth in 2007 for the first time since their 1977 discovery. This provides a rare opportunity to observe their dark (unlit) side ...Not to be too dense, but if the rings are edge-on, how is either side visible?
12 posted on
08/28/2007 11:27:21 AM PDT by
Brujo
(Quod volunt, credunt.)
To: SunkenCiv
"The Dark Side of the Rings of Uranus" You don't know the POWER of the Dark Side
15 posted on
08/28/2007 2:56:04 PM PDT by
TheRobb7
(Democrats are more afraid of Brit Hume than Bin Laden.)
To: SunkenCiv
17 posted on
08/28/2007 11:35:09 PM PDT by
AndrewC
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