The rings of Saturn are 73,000,000 meters from closest to farthest from 
Saturn. That is, about 20,000,000,000,000,000 square meters of surface 
area, or roughly 400 times the surface area of the earth.

The rings of Saturn are five to fifteen meters thick. Not kilometers. 
Meters. Like, "here, bring me that ladder..."




This is fun:
http://www.ted.com/index.php/talks/charles_elachi_on_the_mars_rovers.html

Watch the first three minutes at least for the humor as he gets the 
crowd warmed up, even if you're not interested in space flight.

-- 
Darren New / San Diego, CA, USA (PST)

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