A meteorite contrail over the Ural Mountains' city of Chelyabinsk, about 1,500 kilometres east of Moscow, Russia pictured in February 2013. Photo: AP

Risk of ‘city-killing’ asteroid striking Earth higher than thought, experts warn

California-based B612 Foundation building asteroid-detecting telescope to raise awareness of threat from space

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A meteorite contrail over the Ural Mountains' city of Chelyabinsk, about 1,500 kilometres east of Moscow, Russia pictured in February 2013. Photo: AP
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