At one time, the radiation belt made travel to this system all but impossible until the system's primary star became relatively stable prior to 2151. (ENT: "Strange New World") In 2164, the Federation starship USS Franklin went missing in the belt. (Star Trek Beyond) The Gagarin Radiation Belt was possibly named after Yuri Gagarin, the first Human ever to venture into space by completing a full orbit of Earth in 1961.