Contact: Dave Finley, Public Information Officer
National Radio Astronomy Observatory
Caption: Particles in dust ring are kept inside the ring by gravitational interaction with planets. Faster-moving inner planet transfers energy to dust particles, moving them outward, deeper into the ring. Slower-moving outer planet removes energy from the particles, causing them to drop inward.
Credit: CREDIT: Bill Saxton, NRAO/AUI/NSF
Usage Restrictions: Reproduce the credit
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