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The unsettling reasons no one saw the Chelyabinsk meteor over Russia coming - and why it could happen again

Ruchika Agarwal,Jessica OrwigApr 19, 2016, 21:06 IST

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In 2013, a fireball exploded over Chelyabinsk, Russia. No one saw it coming. Even though NASA has been able to identify over 14,000 near-earth objects, its asteroid tracking technology is not completely ready to see everything that heads towards the Earth.

NASA's Planetary Defense Coordination Officer Lindley Johnson told Headlines & Global News about the unsettling reasons why.

Produced by Ruchika Agarwal and Jessica Orwig

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