Scientific advances from World War II revolutionized our world and beyond. Sixty-one years ago the experiment of the United States Army Signal Corps, called Project Diana, in bouncing radar signals off the moon bore fruit. Radar took 2.5 seconds to make the round trip of almost half a million miles. Thus radar astronomy, along with the United States space program, was born. Careful calculations had to be made each day to account for the Doppler effect. Moonbounce radio communication is still used by some amateur radio operators.