Picture of the Day: Swirling Haze on Saturn's Moon

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NASA

The Cassini space craft recently left the single plane around Saturn which its rings and moons share, and it can now see things like this: a vortex of haze forming on the south pole of Titan, one of Saturn's moon. No one's sure why the haze is forming (though NASA scientists hazard guesses), and soon we'll run out of new visual evidence. Winter is coming to the south of Titan and the haze, if it survives, will swirl in darkness for years.

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Robinson Meyer is an associate editor at The Atlantic, where he covers technology.

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