Saturnine mysteries
Paging Sir Arthur C. Clarke; Arthur C. Clarke to the white courtesy phone, please: Saturn's rings are changing.
Among the most surprising findings is that parts of Saturn’s innermost ring — the D ring — have grown dimmer since the Voyager spacecraft flew by the planet in 1981, and a piece of the D ring has moved 125 miles inward toward Saturn.If Cassini turns up a black monolith, I'm heading for the hills...
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