Amazing what you can do when you understand certain principles and laws of physics!
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Of all of Saturn’s rings, the B-ring is the most opaque and most massive. In fact, it’s the most opaque ring in the solar system, according to NASA. But it’s not well understood. Researchers reported their results from “weighing” the B-ring’s opaque center for the first time. They achieved the feat by analyzing the ring’s spiral density waves, which are created by the gravitational forces from both Saturn’s moons and the planet itself.
Source: Stepping on the Scale: Scientists “Weigh” Saturn’s Most Massive Ring
Marcha's Two-Cents Worth 
Scientists come up with some amazing solutions. I would never have thought that could be weighed.
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Somehow just about everything comes down to F=ma. My favorite equation, probably because it’s also a permutation of my initials. LOL.
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Science is NOT my strong subject, but I like that you have an equation ‘named for you’. 😉
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