UFOs or Unidentified Flying Objects have long been a matter of great curiosity and interest for human beings on the Earth, particularly from June 24, 1947 when American pilot Kenneth Arnold reported sighting nine circular objects flying across his airplane's path in the sky over the State of Washington. His description of their movements as being like "saucers skipping over the water" coined the term, 'flying saucer.' However, objects shaped like cigars, squares, balls, triangles, rings and hats have also been reported to have been seen in almost every country, of this huge and diverse Living Planet known as the Earth. Basically, these UFOs are amorphous and shape-changing objects. The book consists of an interesting list of UFO Encounters by various Air Force Personnels and Scientists across the globe, their experiences, detailed and exhaustive reports, etc. The book creates an interest and captivates the minds of one and all, irrespective of age, sex, religion, profession and academic qualification, it is very interesting for the children, particularly the school kids, who are ever so curious to know about these extraterrestrial, alien spaceships!