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Celestial Album
Particles in a dust ring
04/13/12

 

Particles in the dust ring are kept inside the ring by gravitational interactions with planets. The faster-moving inner planet transfers energy to dust particles, moving them outward, deeper into the ring. The slower-moving outer planet removes energy from the particles, causing them to drop inward. Credit: ALMA (ESO/NAOJ/NRAO)/B. Saxton



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