http://www.ufoevidence.org/topics/belgium.htm]]An unidentified flying object, or UFO, is any real or apparent flying object that cannot be identified by the observer and which remains unidentified after investigation. UFO's have been spotted all around the world.Reports of unusual aerial phenomena date back to ancient timeshttp://www.montalcino-tuscany.it/ufo_pianello.htmhttp://www.uforth.com/historical.htm, but modern reports and first official investigations began during World War II with sightings of so-called foo fighters by Allied airplane crews and in 1946 with widespread sightings of European "ghost rockets." UFO reports became even more common after the first widely publicized United States sighting in Roswell, New Mexico, in 1947. Many tens of thousands of UFO reports have since been made worldwide. Perhaps the largest database of sightings is UFOCAT with 109,000