View Full Version : Saturn's Rings May Be Billions of Years Old

2008-Sep-23, 02:30 PM
Saturn's enigmatic rings may be much older and also much more massive than previously thought, according to a new study. Because Saturn's rings look so clean and bright, it was thought the rings were younger than the planet itself, which is estimated to be about 4.5 billion years old. But using data [...]

More... (http://www.universetoday.com/2008/09/23/saturns-rings-may-be-billions-of-years-old/)

2008-Sep-23, 03:50 PM
Fraser. That's interesting. As we just saw the first speckle image of an exoplanet in the last few weeks...there ought to be a changing albedo for a giant exoplanet with ring system, just as there is for the Saturnian sysyem over it's period. pete