Did extraterrestrial beings visit our planet in ancient times? That's what the popular cable television program Ancient Aliens: The Series asks viewers to believe. But is it true? Only one book dares to weigh the evidence to find out once and for all if the "ancient astronaut theorists" appearing on Ancient Aliens really know what they're talking about, or if their ideas are lighter than a UFO's tractor beam. What you are about to read is a collection of skeptical xenoarchaeologist Jason Colavito's episode-by-episode reviews and commentaries covering Seasons 3 and 4 of Ancient Aliens. This critical companion examines the specific claims made by ancient astronaut theorists on Ancient Aliens and evaluates them against the scientific, literary, and historical evidence. Did aliens create Bigfoot? Did aliens make a peace treaty with deep sea fish? Ancient astronaut theorists say YES! Read on to find out if they're right...