A cikin watan Oktoba 1945, Clarke ya wallafa wata kasida mai suna "Extraterrestrial Relays" a cikin mujallar Wireless World na Birtaniya. Wannan labarin ya bayyana ainihin abubuwan da ke tattare da shigar da tauraron dan adam a cikin tauraron dan adam a cikin tashoshin rediyo don sake watsa siginar rediyo. Saboda haka, Arthur C. Clarke ana kiran shi a matsayin mai kirkiro na tauraron dan adam da kuma kalmar 'Clarke Belt' da aka yi amfani da shi a matsayin bayanin yanayin.
siginar rediyo