UFOs and aliens—is there something going on? ...Given the number of unexplainable sightings every year, however, there should be a virtual queue of extraterrestrial craft entering our atmosphere. But this has never been detected. Although the majority of sightings are explainable as natural or man-made phenomena, or psychological delusions, some are not so easy to dismiss. Regardless of whatever one may think they are, the evidence suggests that they are already here, that is, emanating from the earth.