Source: http://www.popularmechanics.com/technolo...

The short answer is yes, although with a bunch of caveats. The code would be huge (roughly 16 square miles), and you'd need to shoot it from about 8 miles away, which is to say space. At that point the atmosphere of Earth starts getting in the way and you'd have to put it on the moon. And it only gets crazier from there.