Meteorites are ambiguous. As shooting stars they are messengers of good luck. But as massive missiles they spread fear of death and destruction. In the planet’s history, there have been numerous impacts with cataclysmic consequences. February 15th, 2013 already is a historic date: out of the blue, a meteorite exploded in the earth’s atmosphere above the Russian region of Chelyabinsk. The massive shockwave destroyed countless windows and buildings. About 1,500 people were injured, in most cases by glass fragments. The same day, the 40-meter asteroid 2012 DA 14 passed the earth in a distance of only about 26,000 kilometers – the closest fly-by scientists ever recorded. These two events were not linked to each other – which only points out the menace of meteorites hitting our planet. State-of-the-art computer graphics, spectacular meteorite videos, on-location sequences and expert interviews add up to a comprehensive portrait of these celestial bodies.