US spying agency NASA today confirmed the existance of what they describe to be a "[..] meteor controller capable of manipulating the orbit of celestial bodies (see
Near-Earth objects) on a scale much larger than what generic rocket engines of our time could achieve.", adding that "although moving the area of impact north or south will be impossible due to reliance on Earth's orbital direction [..] timing as well as east-west accuracy are hampered by Earth rotation, this device would have the means to bombard Earth in the near future".
Source:
http://apod.nasa.gov/apod/ap131201.htmlUpdate: Additional investigation by inspectors of the National Armageddon Spying Agency (NASA) just recently revealed further facts about this construction. According to an official report it is the first successful attemt at controlling weather on a grand scale.