A winter morning in the Russian Urals is interrupted by a dramatic explosion. A meteor shoots across the sky early on Friday sending fireballs crashing down on the town of Chelyabinsk. Damage from the meteor shower was clear to see. This zinc factory suffered partial collapse. And many other buildings were damaged. Residents report seeing burning objects in the sky as the meteor raced across the horizon, leaving a trail of white smoke which could be seen 200 kilometres away.