In 2013, a 20-meter asteroid struck the Russian city of Chelyabinsk, and the resulting pressure and winds from the shock wave wreaked all kinds of havoc - breaking windows, damaging buildings up to 58 miles away, sending debris flying, and injuring over 1,200 people. NASA researchers are creating 3D asteroid models and using a powerful supercomputer to produce simulations of hypothetical asteroid impact scenarios. This research is being completed in support of NASA's Planetary Defense Coordination Office (PDCO), and the results could help first responders and other agencies learn how to identify, and make informed decisions, on how to defend against possible life-threatening asteroid events, like the one that happened in Chelyabinsk. Read more at 3DPrint.com: http://3dprint.com/179784/nasa-3d-asteroid-models/