Cosmic Communication: Signal or Noise?

This chapter explores humanity's diverse attempts to communicate with extraterrestrial life, highlighting both serious efforts like the Voyager plaques and more whimsical ideas. It discusses key events such as the Wow signal and the complexities of cosmic signals, including distinctions between lasers and masers. The speakers also reflect on the implications of broadcasting messages into space, emphasizing the need for greater understanding and international protocols in extraterrestrial communication.