Saturn's rings are 4.4B years old, study suggests

12/15/2013 | Space.com

The rings around Saturn are 4.4 billion years old, according to a study unveiled at the annual meeting of the American Geophysical Union last week. Measurements from NASA's Cassini spacecraft, which is orbiting the planet, suggest that "the main rings would be [extremely] old, rather than hundreds of millions of years old," said Sascha Kempf, a member of the research team at the University of Colorado at Boulder. The researchers used data from Cassini's Cosmic Dust Analyzer to measure how certain particles move through Saturn's system to determine the age of the rings.

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