It is always astonishing to see some things to leak from the government. Recently, it has been revealed that during the Cold War the U.S. planned to blow up the moon! They thought of doing this to display their strength against their opponent, Russia, during the war. The U.S. government wanted the Soviet Union to see the flash of light in the sky and know that the U.S. was not bluffing. Hit the jump for more details.
The military then decided to not complete the mission because of the dangers it may have imposed on Earth. Fortunately they abandoned that idea because at the time of the Cold War, the U.S. space program was still very young.