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Slightly off topic, but one of my favorite solar system facts is that the with of Saturn's rings can be measured in feet. They are much thinner than I ever expected.

Sure, if you consider 3,200 feet as "measured in feet" [1]. Anything can technically be measured in feet. When you said that I assumed you meant they were like 20-30 feet thick, not over half a mile.

[1] http://coolcosmos.ipac.caltech.edu/ask/108-How-large-are-Sat....

From a NASA website[0]: Saturn’s rings are incredibly thin. The main rings are generally only about 30 feet (10 meters) thick, though parts of the main and other rings can be more than a mile, or several kilometers, thick.

[0] https://hubblesite.org/quick-facts/all-quick-facts

That's still pretty damn thin, relative to the size of the rings. An interesting quote from your link:

"If you had a model of Saturn that was a meter stick wide (3 feet), its rings would be about 10,000 times thinner than a razor blade!"

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