Dust cloud from meteor blast over Russia leaves lasting impression

08/19/2013 | Space.com

A bus-sized meteor that exploded above Chelyabinsk, Russia, in February left a lingering dust cloud in Earth's atmosphere, NASA scientists say. Researchers tracked the cloud for months using NASA's Suomi NPP satellite. "Indeed, we saw the formation of a new dust belt in Earth's stratosphere, and achieved the first space-based observation of the long-term evolution of a bolide plume," said Nick Gorkavyi, an atmospheric physicist with NASA's Goddard Space Flight Center who led the study.

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