How long will it take for the rings of Saturn to disappear?

I have seen much more written on possible origin of Saturn rings that on their possible future. However, those two might be related: If the rings originated from the primordial protoplanetary disk that gave birth to both Sun and its planets, they are probably here to stay. read more

The rings are so dynamic and changing, that some people believe that they cannot last very long. Some theories of ring formation predict about a 10,000 to 50,000 year lifespan, I've been told. We don't know how long Saturn's rings have been around. read more

Because the rings are so thin, they can actually disappear when viewed through a small telescope. In the months ahead, Saturn's rings will become thinner and thinner until, on Sept. 4, 2009, they vanish. read more

Saturn has many rings with many different circumferences. If we choose the middle of the bright A ring, we get a diameter of about 277,000 km with a circumference of about 871,000 km. read more