(en) Daniel R. Glover, « TELSTAR », NASA Experimental Communications Satellites, NASA, (consulté le ) : « On July 9, the day before the Telstar I launch, the U.S. conducted a high altitude nuclear test (Starfish). Telstar's orbit took it through the Earth's inner radiation belt as well as a small portion of the outer belt. The radiation exposure was increased by the Starfish nuclear explosion as well as by a Soviet test in October 1962. After four months of successful operation, some transistors in the command system succumbed to the radiation. A workaround was successful in reviving the spacecraft for two more months. ».
