The Voyager method is really an American scientific application that employs two robotic interstellar probes, Voyager one and Voyager two. They were introduced in 1977 to reap the benefits of a positive alignment of Jupiter and Saturn, to fly near them although collecting information for transmission again to Earth. http://riveroqngz.ampedpages.com/New-Step-by-Step-Map-For-Voyager-One-Sounds-Of-The-Earth-Record-39170495