littlesparkvt 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.
"I've finally learned what `upward compatible' means. It means we get to keep all our old mistakes." -- Dennie van Tassel