Unlike other books about UFOs, Space Faring Civilizations is largely devoted to what has been revealed about advanced extraterrestrial life and its ongoing association with terrestrial humanity per disclosures provided by reputable government insiders, contactees, and a host of other mainstream scientists and engineers who have dedicated themselves to the study of this controversial field. What has been divulged by various whistle blowers that have worked for the U.S. government in a Black Ops capacity is that our military is aware of literally dozens of different races of advanced beings. The Apollo astronauts saw and photographed the remnants of ancient civilizations on the far side of the moon, a civilian scientist was brought in to reverse engineer the propulsion system of a recovered alien craft, deep underground military bases have been built, many of which have a human / alien constituency, and a Majestic 12 scientist details his work with a time traveling Grey alien from 52,000 years in our future. Despite the skepticism of the general public, the extraterrestrial phenomenon is not a hypothetical concept, but rather a reality. Advanced races from other worlds have been involved with Earth and our species for a very long time.