Let me begin my posting of the day by answering that question at the top.  There is no convincing truth about flying saucers and extraterrestrial alien being real, or not. In one corner are scientists who work in this field.  That would include me, for I  spent time at NASA's Ames Research Center on the Search for Extraterrestrial Intelligence .  But that was half a century ago. From Wikipedia : Historically, ufology has not been considered credible in mainstream science. [ 161 ] The scientific community has generally deemed that UFO sightings are not worthy of serious investigation except as a cultural artifact. [ 165 ] [ 123 ] [ 120 ] [ 166 ] [ 167 ] [ 168 ] [ 169 ]   These researchers mostly believe that there must be life somewhere in the universe, and most probably, there should be some intelligence. But when I was at Ames, you would be laughed out of the room if you even talked about flying saucers.  In other words, belief was very, very low. Today...