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from NASA

Around the World in Four Days: NASA Tracks Chelyabinsk Meteor Plume

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A meteoroid fell to Earth on February 15, streaking some 20 to 30 kilometers above the city of Chelyabinsk, Russia at 9:20am local time. Initially traveling at about 20 kilometers per second, its explosive deceleration after impact with the lower atmosphere created a flash brighter than the Sun. This picture of the brilliant bolide (and others of its persistent trail) was captured by photographer Marat Ametvaleev, surprised during his morning sunrise session creating panoramic images.

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from Slate Magazine

Astronomers May Have Traced the Huge Chelyabinsk Meteor Back to an Asteroid

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from io9

Incredible details are emerging about Russia's Chelyabinsk meteor

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The Chelyabinsk meteor that blazed a trail across the morning sky in Russia this past February left a shocking impact on not just the Ural Mountains region, but the entire world. A new report published in the journal Geophysical Research Letters states the shockwave from the meteoric explosion on the morning of February 15, 2013 traveled around the globe — not once, but twice. | Red Orbit