Philip J. Klass

About the author: Philip J. Klass is a science writer and UFO researcher. His books include UFOs: The Public Deceived and The REAL Roswell Crashed Saucer Coverup.

Most UFOs (Unidentified Flying Objects) are really MPOs (Misidentified Prosaic Objects) such as planets, bright stars, meteors, airplanes, and reentering rockets and space debris. The human mind can play tricks on the observer and make these objects appear like flying saucers. Unexplained UFO sightings often require months of investigation before they can be explained. Even if an explanation is never found in some cases, however, that does not mean that one should jump to the conclusion that extraterrestrial vessels exist.

Despite widespread media coverage of UFOs (Unidentified Flying Objects), one important and well-demonstrated fact is seldom...