He continued to refine his designs; the most elaborate message he helped to develop and assemble was the Voyager Golden Record, which was sent out with the Voyager space probes in 1977.
Sagan continuou refinando os seus deseños; a mensaxe máis elaborada que axudou a desenvolver e preparar foi o Disco de Ouro das Voyager, que foi enviado coas sondas espaciais Voyager en 1977.