Meteor arrival: #OTD 5 years ago, a chunk of space rock arrived unexpectedly, exploding with the force of 30 atomic bombs #Chelyabinsk #asteroid #AsteroidDay2018 https://t.co/V5cvttrS60 pic.twitter.com/oV8dPNmJf8
— ESA Operations (@esaoperations) February 15, 2018
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