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A meteor streaked across the sky and exploded over central Russia on Friday, sending fireballs crashing to earth which shattered windows and damaged buildings, injuring more than 500 people.
People heading to work in Chelyabinsk heard what sounded like an explosion, saw a bright light and then felt a shockwave, according to a Reuters correspondent in the industrial city 950 miles east of Moscow.
The fireball, travelling at a speed of 19 miles per second according to Russia’s space agency Roscosmos, had blazed across the horizon, leaving a long white trail in its wake which could be seen as far as 125 miles away.
Car alarms went off, windows broke and mobile phone networks were interrupted. The Interior Ministry said the meteor explosion had caused a sonic boom.