USSR Researchers have been curious about extraterrestrial intelligence and of the detection of radio signals sent by it. It was always in question whether another life exists parallel to Earth somewhere in the universe. The scientists want to find the answers on how really life started and its progress to civilizations and innovations. This was the reason why CETI (Communication with Extraterrestrial Intelligence) program was created. Some of its attempts were sending messages to Moon and Mars on 19th and 20th century.