In the 1980s, people across North America saw bizarre-shaped airships with gleaming search lights soaring above their farms and towns. Some people claimed that those were only human-constructed aircraft. However researchers disagreed even though most of the investigators thought that the airship reports were hoaxes spread by local people and written by creative journalists who wanted to sell papers. However a few ufologists -- researchers who have theories and study UFOs (Unidentified Flying Objects) - believed that these were reliable UFO sightings. Is this truth? However it did happen. The researches claim that there is no evidence to prove that the airships are constructed by human. What are UFOs? Are they real, or are they the result of exaggerated imagination or just honest mistakes? Does UFO really exist"

UFO is a reported sighting of a flying object seen in the sky or on land which appearance, movement, actions...