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At last! Cassini spies methane clouds on Saturn's moon Titan
At last! Cassini spies methane clouds on Saturn's moon Titan

Flying past Saturn’s moon Titan, NASA’s Cassini spacecraft has caught a few glimpses of methane clouds speeding over the enormous moon’s hydrocarbon seas in its northern polar region. Clouds developed and dissipated over Ligeia Mare, a roughly 310-mile-wide sea of methane and ethane that ranks as Titan’s second-largest lake. Tracked for more than two days in late July, the pale apparitions’ movements revealed wind speeds of 7 to 10 mph. “It was exciting to see them because we have been waiting for a while now,” said Elizabeth Turtle, a planetary scientist working with the Cassini imaging team at the Johns Hopkins University Applied Physics Lab in...

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