The 1977 Wow Signal and Its Implications

This chapter explores the historical significance of the 21-centimeter hydrogen line in radio astronomy and its potential use in extraterrestrial communication. It recounts the mysterious 1977 'Wow Signal' captured by the Big Ear telescope, which sparked intrigue regarding alien messages. The discussion also highlights the complexities of interpreting such signals and the challenges scholars face in differentiating between natural phenomena and potential extraterrestrial origins.