Nothing could POSSIBLY go wrong knocking asteroids about, eh? This HAS to be a joke.
http://www.redorbit.com/news/space/2097602/esa_to_attempt_asteroid_smashup
Embedded Link
ESA To Attempt Asteroid Smash-up – Space News – redOrbit
Scientists from the European Space Agency (ESA) are planning to fire a spacecraft into an asteroid in an attempt to prepare for one that could be on a direct collision course with the Earth.
Post imported by Google+Blog. Created By Daniel Treadwell.
It's a concept that has been discussed since the 50s. https://secure.wikimedia.org/wikipedia/en/wiki/Project_Orion_%28nuclear_propulsion%29
In the 80s, Pournelle and Niven wrote the SF book "Footfall" which used the idea as a major plotpoint. https://secure.wikimedia.org/wikipedia/en/wiki/Footfall