Are Saturn’s rings young or old?

Cassini data suggested that Saturn’s rings were only 10 to 100 million years old. A new study suggests that a "ring rain" onto Saturn makes the rings look younger than they really are, and that in fact Saturn’s rings date back billions of years.

 

Cassini data seemed to indicate rings lasting only 10 million to 100 million years. A new study suggests that dusty and organic material ejected from Saturn’s rings – a “ring rain” – could make the rings appear younger than they really are, and that in fact could mean that Saturn’s rings date back billions of years. As things stand now, we don’t know if Saturn’s rings are young or old; we only know that astronomers are continuing to learn about them.

Sourced through Scoop.it from: earthsky.org