Viewpoints
Will an asteroid destroy you before you finish this?
Nov. 19, 2013
On Feb. 15, a 13,000-ton rock plunged through the skies above Chelyabinsk, Russia. It shone 30 times brighter than the sun, and hurtled at 68,000 kilometers per hour toward a city of more than a million people.As the rock broke apart during its fiery descent, it dispersed energy equivalent to 500 kilotons of TNT, shattering thousands of windows. Some 1,500 people were injured, and shock waves caused a ribbon of damage extending 88 kilometers on either side of the meteor’s path. Witnesses thought