The signal had travelled around 220 light-years – meaning its journey began in the year 1757 (a reply would take a similar length of time – suggesting an all-round trip of 440 light-years). To arrive at earth in such a powerful state means that its source technology would have to be extraordinarily powerful whilst boosting the signal as it traversed interstellar space. If it was the product of natural phenomena, then it was a process that scientists did not yet understand at the time. However, many assume this signal to be artificial in nature, and deliberate in intent – as it was designed to reach earth and to be received and understood by those on earth. As technology as improved immeasurably, this frequency has been observed and re-observed – with nothing found.