UFO Unidentified Flying Objects
UFO’s by definition are quite simple objects flying the sky that cannot be identified. They may be from under our seas-remember most of the ocean floor is unexplored, from another planet- with the millions of other planets this is quite possible, or just as likely from a parallel universe or other dimension.
perhaps we can make an attempt to make contact by becoming a more peaceful civilization and stop all of what must appear to an outside observer as constant clan warfare