ESA Euronews - Accidents and Asteroids - Addressing the Threat - HD

How real is the threat of an asteroid hitting Earth, and is there anything we can do to prevent it from happening? Asteroid impacts are nothing new. Only last year, one exploded over the city of Chelyabinsk in Russia injuring 1500 people and damaging some 7,000 buildings.

Credit/Courtesy: ESA/Euronews