"there is no doubt that ufos (unidentified flying objects) exist - many people see things in the skies that they cannot identify, ranging from aircraft to meteors. whether or not any of those objects and lights are alien spacecraft is another matter entirely- given the fantastic distances and effort involved in just getting to earth from across the universe, such a scenario seems unlikely. still, while careful investigation has revealed known causes for most sighting reports, some ufo incidents will always remain unexplained."
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