Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Since the dawn of time man has looked up at the infinite specks of light in the night sky, wondering if there is someone looking back. The theories about life elsewhere in the universe moved closer to the mainstream science with the discovery of telescope and the realization that the Earth is just one of uncountable bodies in an almost unimaginably vast universe. The modern day Search for Extra Terrestrial Intelligence or SETI program began in 1960, with Project Ozma, in which a radio telescope was used to examine Epsilon Eridani and Tau Ceti star systems for signs of intelligent life. Learn more about the active and expanding program in this book.