Since the early 1970s, humanity has sent messages beyond the Solar System in the hopes of contacting another civilization. Some were physically attached to interstellar spacecraft, while others were beamed into space in the form of radio signals. This video provides a detailed chronology of almost all of these messages with a focus on their meaning and improbability of reception.
Indeed, he did. It is 2h30m long though, I have been chipping at it for three days and I am still not finished 😆