How much of the solar system's mass is in the Sun?
The Sun contains about 99.8% of all the mass in our solar system.
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- How thick are Saturn's rings?
“Saturn's rings are mostly ice and are surprisingly thin, often only about 30 feet thick.”
Reference: NASA
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What did Galileo see when he looked at Saturn?
Galileo's telescope wasn't strong enough to show Saturn's rings clearly, so he thought the planet had "ears" or two large moons on either side.
Does Jupiter have rings?
Jupiter has faint rings.