It all started on October 7, 1959 with the Soviet satellite Luna-3, which was the first to fly over the dark side of the moon. A detailed study of the images revealed a large foreign body, moreover of artificial origin. Professor Lipsky's assumption that this is an aircraft could be confirmed only twelve years later. A group of Soviet cosmonauts, together with American scientists, descended to the object in August 1971. In 1983, Ostapenko, Belova and Muller sent a message in the direction of 27 stars using a planetary radio telescope. The message in the constellation Cygnus should arrive by 2053, plus seventy years on the way back, but the answer came a hundred years earlier and was overwhelming...