what are ufos
UFOs are unidentified flying objects, but no one really knows what they are. Many researchers (called ufologists) have theories about what UFOs might be, but because no one can examine a UFO in a scientific laboratory, all of these ideas are really only educated guesses. We can offer a definition of UFOs, however, that you may find useful when you study the subject:
You glimpse a light in the night sky -- not a star, not an airplane, but something radically different. It moves with baffling speed, pulsates with radiance beyond anything you've witnessed. Three letters immediately enter your mind: U-F-O. Technically an unidentified flying object can be anything when you get right down to it, but the term has become synonymous with extraterrestrial spacecraft.