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Emily Lakdawalla • February 07, 2006
Saturn is surrounded by a crowded family of rings and moons, and two of those moons -- Epimetheus and Janus -- orbit Saturn so close together that it seems as though their different orbital speeds should make them crash into each other.
Become a member of The Planetary Society and together we will create the future of space exploration.
Help advance robotic and human space exploration, defend our planet, and search for life.
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