Top 5 Alien Encounters!! Real UFO Footage | Alien Sightings Caught On Camera
Unidentified flying objects (UFOs) are things seen in the sky that cannot be identified or explained. UFOs are often associated with aliens and conspiracy theories. Although many UFO sightings often have rational explanations, small numbers truly are unexplained. Here's our pick of the most compelling UFO sightings from all over the world.