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It's the biggest impact event in modern times. On the morning of Feb. 15, 2013, a meteorite streaked across the Russian sky, raining fireballs and causing a shock wave at impact that smashed windows, damaged buildings and injured more than 1000 people. Discovery goes behind-the-scenes of this shocking fireball crash with co-hosts Ziya Tong and Dan Riskin taking a look at all the angles behind the disaster - the biggest impact since the Tungska event. They uncover the mystery of its descent and the power of its blast.