I have gathered many sources and have come to the conclusion that UFOs do exist. Sightings of unusual aerial phenomena date back to ancient times, but only after 1947, have UFOs been widely discussed because of publication world wide. Many things support this concept such as sightings, crop circles, encounters, and abductions.
At least 90% of UFO sightings can be identified as conventional objects, Although time consuming investigations are necessary for such identification. The objects most often mistaken for UFOs are bright planets and stars, peculiar clouds, birds, aircraft, balloons, kites, aerial flares, meteors and satellites.
Between 1647 to 1969 at total of 12,618 reports have been received concerning unidentified flying objects, of which 701 of the reports (5.6 percent) were listed as unexplained.
Some people claim that they have been abducted by extraterrestrials. A Harvard professor has taken these "abductees" and puts them in a hypnotic trans. Under hypnosis, sometimes weeping and shouting with agony and terror, they recover buried memories of alien encounters. There has never been physical proof of any abduction yet to be provided.
The Roswell incident is now generally regarded as one of the most important UFO events in history, an extensive review of the UFO literature of the 1950s finds no mention of it beyond the first press accounts in early July 1947. The only know reference to it as a UFO crash was in a 1955 lecture by broadcaster and UFO enthusiast Frank Edward. Even in the 1960s the UFO literature mentioned it only three times, twice in both brief instances, in the latter rather vaguely. A widely published story reported that personnel from Roswell Field had a "flying disk" in their possession. When the material was flown to Fort Worth, Texas, the commander told the press that the "disk" was really just a weather balloon and produced balloon remains to "prove" it. Pictures were taken, there were chuckles...