Unidentified Flying Object 🛸
You must have seen movies and books featuring saucer shaped discs that hover the ground and are filled with weird looking creatures. In books and movies, the weird looking creatures are aliens from outer space, and the discs are space ships from another planet - or UFOs. The term UFO means an Unidentified Flying Object, and UFOs are one of the great mysteries that have fascinated man for centuries.
Even in ancient times, people looked up to the skies and saw objects that were not stars or celestial bodies. Today UFO sightings are more common than ever. Practically every country in the world has sent in reports of UFO sightings. In many cases, they can be explained as weather balloons, lightning, rockets, birds, atmospheric disturbances - and some have been proved to be hoaxes too. But in 5% of the cases, there is no scientific explanation.
