The Secret History of UFO Incidents in the World

Since the 1934s, with the outbreak of world wars and the rapid development of space science, human beings are no longer satisfied with conquering the blue planet. They have begun to turn their attention to outer space, dreaming of setting foot on the moon, flying to Mars, and traveling throughout the solar system. Under this grand vision, the UFO phenomenon began to come into view, with sightings, cases of abductions by aliens, and space science fiction films and television cases emerging one after another. They were either speculations or hoaxes. However, these unsolved or undisclosed UFO investigation conclusions are no longer important, because they are enough to cause a collective self-awareness awakening for all mankind: Are we humans unique and lonely existences in the vast universe? If not, when and where will those extraterrestrial visitors appear?