Beep Quotes (1 quote)
It is easy to create an interstellar radio message which can be recognized as emanating unambiguously from intelligent beings. A modulated signal (beep, beep-beep, ) comprising the numbers 1, 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, for example, consists exclusively of the first 12 prime numbers . A signal of this kind, based on a simple mathematical concept, could only have a biological origin. But by far the most promising method is to send pictures.