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Moons at Work - NASA
URL: http://www.nasa.gov/mission_pages/cassini/multimedia/pia14644.html
Submitted: Fri Jan 25 2013
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CT: UFOSeek News 2013: Moons at Work - NASA
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Description:
The ring-region Saturnian moons Prometheus and Pan are both caught "herding" their respective rings in this image. Through their gravitational disturbances of nearby ring particles, one moon maintains a gap in the outer A ring and the other helps keep ...