Edge of Reality, Two Scientists Evaluate What We Know of the UFO Phenomenon, Red Wheel Weiser, J. Allen Hynek, Jacques Vallee,UFOs and extraterrestrial beings,Unexplained phenomena / the paranormal, UFOs;Extraterrestrials;Aliens;US Air Force;Cover-up;Government conspiracy;project blue book;Men In Black;Betty Hill;Pascagoula;Invisible College;UAP;alien abductions;close encounters;area 51;science;George Adamski,, MUFON, United States, en-UShttps://redwheelweiser.comUFOs;Extraterrestrials;Aliens;US Air Force;Cover-up;Government conspiracy;project blue book;Men In Black;Betty Hill;Pascagoula;Invisible College;UAP;alien abductions;close encounters;area 51;science;George Adamski, [BLURB],[CITY],,books, ebooks, biblet, Book2look