Some of the world's most powerful observatories are poised to study the 'ring rain' phenomenon.
" in cosmic timescales. But the rate at which the ring material is raining onto the planet is still largely uncertain; the rings could disappear as quickly as 100 million years, or they might hang around for 1.1 billion years, astronomers say.
Details of Saturn's icy rings are visible in this sweeping view from Cassini of the planet's glorious ring system. The total span, from A ring to F ring, covers approximately 40,800 miles and was photographed at Nov. 26, 2008. "We suspect that when the rings are edge-on with the sun, the ring rain will slow down," O'Donoghue told Space.com."And that when they are tilted to face the sun, the ring rain influx will increase."
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