littlesparkvt (2707383) writes "Impact of Asteroid 2012 DA14 would hit the Earth with the force of 185 Hiroshima Bombs or 1700 Kilotons. The impact of Tunguska in 1908 destroyed an 830 mile radius, 2012 DA14 would have a similar blast area." Link to Original Source
Man is the best computer we can put aboard a spacecraft ... and the
only one that can be mass produced with unskilled labor.
-- Wernher von Braun