It's crazy to think what we dont know...

[mtuepker]

http://www.nbcnews.com/science/space/fi ... oop-n62266

asteroids with rings...who woulda thunk it?

[Deane Clark]

This gives me a SETI idea. If we get to the point where we can find rings around extra-solar planets, we should pay particular attention to the "geo"-stationary radius. If we see a ring there around a planet that seems potentially habitable, it could be evidence that somebody's home.

[mtuepker]

I guess I can't say for sure, but I think the distance there would be pretty small. Needle in a Haystack I suppose...but thats what they're looking for.

[johnkra]

It seems as though for most exoplanets discovered so far the geosync orbit would intersect the host star.
M73/kj0p