This was perhaps the most impactful event of 2013 –when in February an Asteroid from outer space exploded over the Russian City of Chelyabi nsk. The 20 meter wide space rock travelled at 60 times the speed of sound (12 Wkimedia Commons miles per second),exploded with an energy equal to 500 kilotonnes of TNT and burnt with a brightness 30 times brighter than the Sun ,while a thousand People were injured from the shattered glass and falling debris –no lives were lost as …..luckily the intense heat evaporated most of the meteor .