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High School Electives
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Astronomy
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Planetary Rings
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Astronomy
AST.159 Planetary Rings
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A close ring lies in a planet's equatorial plane. Which broad explanation fits many giant-planet ring systems?
A
The ring is held up by air pressure above the atmosphere.
B
Close particles are shaped by the planet's gravity and collisions into an equatorial disk.
C
The ring avoids the equator because gravity is absent there.
D
The ring is stuck to the planet's surface like a painted stripe.
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