NASA is partnering with the National Nuclear Security Administration on a program that would employ nuclear missiles to defend against a major threat to national security: meteors. After a 60-foot-wide space-rock exploded in the skies above Russia in 2013 and injured 1,500 people, both organizations began to more seriously consider methods to protect from future attacks. The two have agreed upon sending nukes into space to blast any comets, asteroids and meteors (or at least deflect them) before they reach us. Back-up plans currently include the use of laser beams and concentrated solar energy.
NASA Might Nuke Incoming Meteors