a position conducive to radio transmission. Although relatively short-lived, the Moon Relay served as a bridge to modern American military satellite systems. References Van Keuren, David K. (1997). Moon in Their Eyes: Moon Communication Relay at the Naval Research Laboratory, 1951-1962. In Butrica, Andrew J. (Ed.), Beyond the Ionosphere: Fifty Years of Satellite Communication (NASA SP-4217), pp. 9–18. United States Navy in the 20th century History of radio