The Vanishing Rings of Saturn
By NASA
Mar 18, 2008, 20:47 PST
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The rings of Saturn have narrowed visibly in the last year. Are they disappearing? Four hundred years ago, the same phenomenon puzzled Galileo. The same thing that's happening now: we're experiencing a "ring plane crossing." As Saturn goes around the sun, it periodically turns its rings edge-on to Earth—once every 14-to-15 years.
Source: NASA
Source URL: http://science.nasa.gov/headlines/y2008/18mar_saturn.htm?list68782
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