GET OUT THE SLEDS: Spacecraft Detects Snow Falling On Mars! - Spokane, North Idaho News & Weather KHQ.com

GET OUT THE SLEDS: Spacecraft Detects Snow Falling On Mars!

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NBCNEWS.COM - A spacecraft orbiting Mars has detected carbon dioxide snow falling on the Red Planet, making Mars the only body in the solar system known to host this weird weather phenomenon.

The snow on Mars fell from clouds around the planet's south pole during the Martian winter spanning 2006 and 2007, with scientists discovering it only after sifting through observations by NASA's Mars Reconnaissance Orbiter (MRO). The Martian south pole hosts a frozen carbon dioxide — or "dry ice" — cap year-round, and the new discovery may help explain how it formed and persists, researchers said.

"These are the first definitive detections of carbon-dioxide snow clouds," lead author Paul Hayne of NASA's Jet Propulsion Laboratory (JPL) in Pasadena, Calif., said in a statement. "We firmly establish the clouds are composed of carbon dioxide — flakes of Martian air — and they are thick enough to result in snowfall accumulation at the surface." click here to read more

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